Properties of the Number 42387

Forty-Two Thousand Three Hundred Eighty-Seven

Basics

Value: 42386 → 42387 → 42388

Parity: odd

Prime: No

Previous Prime: 42379

Next Prime: 42391

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 71 × 199

Divisors: 1, 3, 71, 199, 213, 597, 14129, 42387

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010110010011

Octal: 122623

Duodecimal: 20643

Hexadecimal: a593

Square: 1796657769

Square Root: 205.88103360921812

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

Sum of largest parts of all partitions of n into an odd number of parts. A222047

Numbers that define integer Heronian triangles [prime(a(n)), prime(a(n)+1), A068965(n)] with area A068966(n). A68964

[ exp(1/20)*n! ]. A30859

Denominators of continued fraction convergents to sqrt(720). A42387

First position of n in the continued fraction of log(2). A228269

Number of (n+2) X (5+2) 0..1 arrays with no 3 X 3 subblock diagonal sum 2 and no antidiagonal sum 2 and no row sum 0 and no column sum 0. A255789