Properties of the Number 66442

Sixty-Six Thousand Four Hundred Forty-Two

Basics

Value: 66441 → 66442 → 66443

Parity: even

Prime: No

Previous Prime: 66431

Next Prime: 66449

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 139 × 239

Divisors: 1, 2, 139, 239, 278, 478, 33221, 66442

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000001110001010

Octal: 201612

Duodecimal: 3254A

Hexadecimal: 1038a

Square: 4414539364

Square Root: 257.7634574566379

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

Expansion of ∏_k>=1 1/(1 - k^k*x^k)^{k^k}. A294757

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of ∏_j>=1 1/(1-j^k·j*x^j)^j(k·j) in powers of x. A294756

a(n) = 12ⁿ mod n. A66442

Number of (n+2)X(6+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00010101. A260473