Properties of the Number 42621

Forty-Two Thousand Six Hundred Twenty-One

Basics

Value: 42620 → 42621 → 42622

Parity: odd

Prime: No

Previous Prime: 42611

Next Prime: 42641

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 14207

Divisors: 1, 3, 14207, 42621

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011001111101

Octal: 123175

Duodecimal: 207B9

Hexadecimal: a67d

Square: 1816549641

Square Root: 206.44854080375575

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

Replacing each digit d in decimal expansion of n with d² yields a prime at each step when done recursively three times. A316604

Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 2,1 3,0 polyhexes in any orientation on a planar n X n X n triangular grid. A155235

Denominators of continued fraction convergents to sqrt(839). A42621