Properties of the Number 42645

Forty-Two Thousand Six Hundred Forty-Five

Basics

Value: 42644 → 42645 → 42646

Parity: odd

Prime: No

Previous Prime: 42643

Next Prime: 42649

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 2843

Divisors: 1, 3, 5, 15, 2843, 8529, 14215, 42645

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011010010101

Octal: 123225

Duodecimal: 20819

Hexadecimal: a695

Square: 1818596025

Square Root: 206.50665848829186

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

Number of binary strings of length n with no substrings equal to 0001 or 0110. A164396

The sum of the numbers that are inside the contour of an n-story Christmas tree drawn at the top of the numerical pyramid containing the positive integers in natural order. A358994

Powers of fifth root of 23 rounded down. A18180

Denominators of continued fraction convergents to sqrt(852). A42645

Carmichael numbers of the form C = 37·73*(18n+91). A182206