Properties of the Number 42156

Forty-Two Thousand One Hundred Fifty-Six

Basics

Value: 42155 → 42156 → 42157

Parity: even

Prime: No

Previous Prime: 42139

Next Prime: 42157

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 1171

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 36, 1171

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010010101100

Octal: 122254

Duodecimal: 20490

Hexadecimal: a4ac

Square: 1777128336

Square Root: 205.31926358722407

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

Number of anisohedral polyhexes with n cells. A75215

Numbers m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,55. A65696

High temperature series for spherical model internal energy on 3-dimensional simple cubic lattice. A3496

Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,11. A64242

Numerators of continued fraction convergents to sqrt(603). A42156