Properties of the Number 65442

Sixty-Five Thousand Four Hundred Forty-Two

Basics

Value: 65441 → 65442 → 65443

Parity: even

Prime: No

Previous Prime: 65437

Next Prime: 65447

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 13 × 839

Divisors: 1, 2, 3, 6, 13, 26, 39, 78, 839, 1678

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111111110100010

Octal: 177642

Duodecimal: 31A56

Hexadecimal: ffa2

Square: 4282655364

Square Root: 255.81634036941423

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) is the number of isosceles trapezoids in a triangular grid of side length n. A389363

Number of ways to place zero or more nonadjacent 0,0 1,0 1,1 2,0 2,1 2,2 3,1 3,2 polyhexes in any orientation on a planar n X n X n triangular grid. A155356

Decimal expansion of Erdős-Borwein constant ∑_k>=1 1/(2^k - 1). A65442