Properties of the Number 42681

Forty-Two Thousand Six Hundred Eighty-One

Basics

Value: 42680 → 42681 → 42682

Parity: odd

Prime: No

Previous Prime: 42677

Next Prime: 42683

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 41 × 347

Divisors: 1, 3, 41, 123, 347, 1041, 14227, 42681

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011010111001

Octal: 123271

Duodecimal: 20849

Hexadecimal: a6b9

Square: 1821667761

Square Root: 206.59380436015016

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

Integers k such that nextprime(k⁵) - prevprime(k⁵) = 4. A90123

Number of unlabeled loopless multigraphs with n nodes of degree 4 or less. A333895

a(1)=2; thereafter a(n) = a(n-1) + gpf(a(n-1)) - 1, where gpf = greatest prime factor = A006530. A389408

Denominators of continued fraction convergents to sqrt(870). A42681