Properties of the Number 42238

Forty-Two Thousand Two Hundred Thirty-Eight

Basics

Value: 42237 → 42238 → 42239

Parity: even

Prime: No

Previous Prime: 42227

Next Prime: 42239

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 7 ² × 431

Divisors: 1, 2, 7, 14, 49, 98, 431, 862, 3017, 6034

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010011111110

Octal: 122376

Duodecimal: 2053A

Hexadecimal: a4fe

Square: 1784048644

Square Root: 205.5188555826448

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

Let A denote the sequence; then A is equal to the union of the self-convolutions A² and A⁴, with terms in ascending order by size, where a(0)=1. A90847

Number of 0..4 arrays x(0..n-1) of n elements with each no smaller than the sum of its two previous neighbors modulo 5. A207096

Numbers k that divide the k-th Domb number. A372941

T(n,k)=Number of 0..k arrays x(0..n-1) of n elements with each no smaller than the sum of its two previous neighbors modulo (k+1). A207100

Numerators of continued fraction convergents to sqrt(645). A42238