Properties of the Number 42108

Forty-Two Thousand One Hundred Eight

Basics

Value: 42107 → 42108 → 42109

Parity: even

Prime: No

Previous Prime: 42101

Next Prime: 42131

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 11 ² × 29

Divisors: 1, 2, 3, 4, 6, 11, 12, 22, 29, 33

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010001111100

Octal: 122174

Duodecimal: 20450

Hexadecimal: a47c

Square: 1773083664

Square Root: 205.20233916795394

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 giving the sum of the number of k-matchings of the graphs obtained by deleting one edge and its two vertices from the ladder graph L_n = P₂ X P_n in all possible ways. A318243

a(n) = ∑_{k=0..floor(n/2)} binomial(k+2,2) * binomial(k,2*(n-2·k)). A392252

∏_{d∣n, A007431(d) > 0} prime(A007431(d)), where A007431 is the Möbius transform of Euler's totient function. A318838

Numerators of continued fraction convergents to sqrt(579). A42108