Properties of the Number 71245

Seventy-One Thousand Two Hundred Forty-Five

Basics

Value: 71244 → 71245 → 71246

Parity: odd

Prime: No

Previous Prime: 71237

Next Prime: 71249

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 × 14249

Divisors: 1, 5, 14249, 71245

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001011001001101

Octal: 213115

Duodecimal: 35291

Hexadecimal: 1164d

Square: 5075850025

Square Root: 266.9175902783479

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

Hyper-Wiener index of a benzenoid consisting of a double-step zig-zag chain of n hexagons (n >= 2, s = 2123; see the Gutman et al. reference). A193396

Expansion of g.f. -x*(10·x⁴+12·x³-x²-3·x-3)/((x²+x-1)*(4·x³+x²-x-1)). A134704

a(n) = n*(n-1)*(2·n² + 1)/6. A71245