ℕ atory
Play Now

Properties of the Number 42906

Forty-Two Thousand Nine Hundred Six

Basics

Value: 42905 → 42906 → 42907

Parity: even

Prime: No

Previous Prime: 42901

Next Prime: 42923

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 7151

Divisors: 1, 2, 3, 6, 7151, 14302, 21453, 42906

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011110011010

Octal: 123632

Duodecimal: 209B6

Hexadecimal: a79a

Square: 1840924836

Square Root: 207.13763540216442

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Triangle read by rows: T(n,k) is the number of weighted lattice paths B(n) having k uhd strings. A247290
Triangle T(n, k) read by rows; given by [0, 1, 0, 2, 0, 3, 0, 4, ...] δ [1, 0, 2, 0, 2, 0, 3, 0, 2, 0, 4, 0, 2, 0, ...] (A000005 interspersed with 0's) where δ is Deléham's operator defined in A084938. A85852
Binomial transform of A101910, where A101910(n) = a(A000120(n-1)) for n>0 with A101910(0) = 1. A101911
Number of nX6 arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 nX6 array. A219517
Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 7Xn array. A219524
Number of nodes in graph BC(n,2) when the internal nodes are counted with multiplicity. A343994
E.g.f. satisfies A(x) * log(A(x)) = 3 * (exp(x) - 1). A357245
T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 nXk array. A219519
a(n) is the Severi degree for curves of degree n and cogenus 4. A328551
Numerators of continued fraction convergents to sqrt(985). A42906