Properties of the Number 81039

Eighty-One Thousand Thirty-Nine

Basics

Value: 81038 → 81039 → 81040

Parity: odd

Prime: No

Previous Prime: 81031

Next Prime: 81041

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 17 × 227

Divisors: 1, 3, 7, 17, 21, 51, 119, 227, 357, 681

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110010001111

Octal: 236217

Duodecimal: 3AA93

Hexadecimal: 13c8f

Square: 6567319521

Square Root: 284.6734971858111

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

4th binomial transform of (1,3,0,0,0,0,0,.....). A81039

Smallest k such that A073259(k)=n or 0 if there is no such value; the first number of which length of fixed-point-list terminated by k-th composite number equals n. A73323