Properties of the Number 42255

Forty-Two Thousand Two Hundred Fifty-Five

Basics

Value: 42254 → 42255 → 42256

Parity: odd

Prime: No

Previous Prime: 42239

Next Prime: 42257

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 × 313

Divisors: 1, 3, 5, 9, 15, 27, 45, 135, 313, 939

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010100001111

Octal: 122417

Duodecimal: 20553

Hexadecimal: a50f

Square: 1785485025

Square Root: 205.5602101575108

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

Numbers n such that both n*π and n·e are within 1/sqrt(n) of integers. A208530

Triangle read by rows: T(n, k) = C(n, k)*∑_j=0..n C(n, k-j)*C(n+j, j)/C(2·j, j). A339000

Denominators of continued fraction convergents to sqrt(653). A42255

Number of labeled nodes in generation n of a rooted tree where a node with label k has k child nodes with distinct labels, such that each child node is assigned the least unused label in the path that leads back to the root node with label '1'. A125033

G.f. satisfies: A(x) = 1 + ∑_n>=1 xⁿ * A(n²*x)^1/n. A158889