Properties of the Number 64129

Sixty-Four Thousand One Hundred Twenty-Nine

Basics

Value: 64128 → 64129 → 64130

Parity: odd

Prime: No

Previous Prime: 64123

Next Prime: 64151

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 13 × 4933

Divisors: 1, 13, 4933, 64129

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111101010000001

Octal: 175201

Duodecimal: 31141

Hexadecimal: fa81

Square: 4112528641

Square Root: 253.23704310388715

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) = [x^n*(n+1/2)] ∏_k=1..n ∑_m>=0 x^k·m². A320932

Numbers n such that prime(n) contains a substring of all the prime digits in order, i.e., "2357". A295708

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 20. A31608

Number of divisors of 12ⁿ - 1 that are relatively prime to 12^m - 1 for all 0 < m < n. A64129