Properties of the Number 42392

Forty-Two Thousand Three Hundred Ninety-Two

Basics

Value: 42391 → 42392 → 42393

Parity: even

Prime: No

Previous Prime: 42391

Next Prime: 42397

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 7 × 757

Divisors: 1, 2, 4, 7, 8, 14, 28, 56, 757, 1514

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010110011000

Octal: 122630

Duodecimal: 20648

Hexadecimal: a598

Square: 1797081664

Square Root: 205.893176186099

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

Triangular array T(n,k) giving number of 3-connected graphs with n labeled nodes and k edges (n >= 4, ceiling(3·n/2) <= k <= n(n-1)/2). A123542

Sizes of successive increasing gaps between 2-pseudoprimes. A175738

G.f. A(x) satisfies: A(x) = ∑_n>=0 (n+1) * xⁿ / (1 - xⁿ⁺¹*A(x)ⁿ). A340359

Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+4x+4y>0. A211626

Expansion of f(x²)² / f(-x) in powers of·where f() is a Ramanujan θ function. A260163

a(n) = (1/C(n,0) - 1/C(n,1) + ... + d/C(n,k))*L, where d = (-1)^k,k = [ n/2 ], L = LCM{C(n,0), C(n,1),..., C(n,n)}. A25536

Triangle read by rows: T(n,k) counts solid partitions of n such that the maximum of planes, rows, columns and values is k. A96272

Primes which are a concatenation of some permutation of the first 5 primes. A177275

Numerators of continued fraction convergents to sqrt(723). A42392