Properties of the Number 71140

Seventy-One Thousand One Hundred Forty

Basics

Value: 71139 → 71140 → 71141

Parity: even

Prime: No

Previous Prime: 71129

Next Prime: 71143

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 5 × 3557

Divisors: 1, 2, 4, 5, 10, 20, 3557, 7114, 14228, 17785

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001010111100100

Octal: 212744

Duodecimal: 35204

Hexadecimal: 115e4

Square: 5060899600

Square Root: 266.7208278331484

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) = floor(a(n-1)*3/2) with a(1) = 5. A381677

Numbers n such that sum of distinct primes dividing n is divisible by largest prime dividing n; n is neither a prime, nor a true power of prime. A71140

Erdős primes: primes p such that all p-k! for 1 <= k! < p are composite. A64152