Properties of the Number 81424

Eighty-One Thousand Four Hundred Twenty-Four

Basics

Value: 81423 → 81424 → 81425

Parity: even

Prime: No

Previous Prime: 81421

Next Prime: 81439

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 7 × 727

Divisors: 1, 2, 4, 7, 8, 14, 16, 28, 56, 112

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011111000010000

Octal: 237020

Duodecimal: 3B154

Hexadecimal: 13e10

Square: 6629867776

Square Root: 285.34890923218893

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(0),...,a(3) = 1, 2, 4, 8; thereafter a(n) = a(n-1) + 2·a(n-2) + 4·a(n-3) + 8·a(n-4), n>3. A102000

Class 5- primes (for definition see A005109). A81424