Properties of the Number 42642

Forty-Two Thousand Six Hundred Forty-Two

Basics

Value: 42641 → 42642 → 42643

Parity: even

Prime: No

Previous Prime: 42641

Next Prime: 42643

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 23 × 103

Divisors: 1, 2, 3, 6, 9, 18, 23, 46, 69, 103

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011010010010

Octal: 123222

Duodecimal: 20816

Hexadecimal: a692

Square: 1818340164

Square Root: 206.49939467223626

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

a(n) = (7·n + 3)*(7·n + 4). A177071

a(n) = 81·n² - 9·n. A277991

Number of -n..n arrays x(0..2) of 3 elements with nonzero sum and with zero through 2 differences all nonzero. A200166

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 0), (-1, 1, -1), (0, 1, 0), (1, 0, 1)}. A149993

Numerators of continued fraction convergents to sqrt(851). A42642