Properties of the Number 42656

Forty-Two Thousand Six Hundred Fifty-Six

Basics

Value: 42655 → 42656 → 42657

Parity: even

Prime: No

Previous Prime: 42649

Next Prime: 42667

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ⁵ × 31 × 43

Divisors: 1, 2, 4, 8, 16, 31, 32, 43, 62, 86

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011010100000

Octal: 123240

Duodecimal: 20828

Hexadecimal: a6a0

Square: 1819534336

Square Root: 206.53329029480938

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

Sums of the products of n consecutive pairs of numbers. A135036

Numbers in which all pairs of consecutive base-6 digits differ by 3. A33077

E.g.f. A(x) satisfies: A'(x) = exp(2·A(A(x))). A259267

Number of nondecreasing strings of numbers x(i=1..n) in -7..7 with sum x(i)³ equal to 0. A188275

Number of (n+1)X(2+1) arrays of permutations of 0..n·3+2 with each element having directed index change 2,-1 1,0 2,1 0,-1 -2,-2 or -1,0. A264485

T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having directed index change 2,-1 1,0 2,1 0,-1 -2,-2 or -1,0. A264490

Numerators of continued fraction convergents to sqrt(858). A42656

E.g.f. A(x) satisfies: A( Integral 1/A(x)² dx ) = exp(x). A233336