Properties of the Number 42891

Forty-Two Thousand Eight Hundred Ninety-One

Basics

Value: 42890 → 42891 → 42892

Parity: odd

Prime: No

Previous Prime: 42863

Next Prime: 42899

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 17 × 29 ²

Divisors: 1, 3, 17, 29, 51, 87, 493, 841, 1479, 2523

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011110001011

Octal: 123613

Duodecimal: 209A3

Hexadecimal: a78b

Square: 1839637881

Square Root: 207.10142442774264

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

Compound filter (summands of A004001 & summands of A005185): a(n) = P(A286541(n), A286559(n)), where P(n,k) is sequence A000027 used as a pairing function, with a(1) = a(2) = 0. A286560

Integer part of 7th root of product of first n primes. A127604

a(n) = number of 7-digit primes with digit sum n, where n runs through the non-multiples of 3 in the range [2..62]. A178876

a(n) = (2·n - 7)*n². A15242

Denominators of continued fraction convergents to sqrt(977). A42891

Number of nX6 0..1 arrays avoiding 0 1 0 horizontally and 1 0 0 vertically. A206887