Properties of the Number 42039

Forty-Two Thousand Thirty-Nine

Basics

Value: 42038 → 42039 → 42040

Parity: odd

Prime: No

Previous Prime: 42023

Next Prime: 42043

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ⁵ × 173

Divisors: 1, 3, 9, 27, 81, 173, 243, 519, 1557, 4671

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010000110111

Octal: 122067

Duodecimal: 203B3

Hexadecimal: a437

Square: 1767277521

Square Root: 205.03414349810132

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

Numerators of convergents to log₂(10). A73733

a(n) is the sum of a sequence of multiples of the n-th prime such that it contains each of the digits from 0 to 9 exactly once and with the least sum possible, or 0 if there is no satisfying sequence. A274328

Diagonal of the triangle A354700. A354701

a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 4, where m = 2·n - 3 - 2^p+1 and p is the unique integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = 1, a(2) = 3, and a(3) = 2. A49968

Positive numbers k at which min{abs(2^k - 10^y)/10^y: y in Z} reaches a new minimum. A333332

Denominators of continued fraction convergents to sqrt(543). A42039