Properties of the Number 42172

Forty-Two Thousand One Hundred Seventy-Two

Basics

Value: 42171 → 42172 → 42173

Parity: even

Prime: No

Previous Prime: 42169

Next Prime: 42179

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 13 × 811

Divisors: 1, 2, 4, 13, 26, 52, 811, 1622, 3244, 10543

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010010111100

Octal: 122274

Duodecimal: 204A4

Hexadecimal: a4bc

Square: 1778477584

Square Root: 205.35822359964064

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

The average of prime factors of n and n+1 is the same. A227755

Coefficients of derivatives of MacMahon polynomials (A060187): p(x,n)=2ⁿ*(1 - x)^{1 + n}*LerchPhi[x, -n, 1/2]; p'(x,n)=(d/dx)p{x,n). A142707

Numerators of continued fraction convergents to sqrt(611). A42172

a(n) = ∑_k=0ⁿ binomial(n,k)²*4^k*A000108(k). A228511