Properties of the Number 42666

Forty-Two Thousand Six Hundred Sixty-Six

Basics

Value: 42665 → 42666 → 42667

Parity: even

Prime: No

Previous Prime: 42649

Next Prime: 42667

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 13 × 547

Divisors: 1, 2, 3, 6, 13, 26, 39, 78, 547, 1094

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011010101010

Octal: 123252

Duodecimal: 20836

Hexadecimal: a6aa

Square: 1820387556

Square Root: 206.55749804836424

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

Number of equilateral triangles formed by triples of points taken from a hexagonal chunk of side n in the hexagonal lattice. A8893

Floor(1/{(6+n⁴)^1/4}), where {}=fractional part. A184630

Triangle T(n,m) read by rows: number of n X m binary matrices with no rows or columns in which all entries are the same (n >= 1, 1 <= m <= n). A283654

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 1), (-1, 1, 1), (1, 0, 1), (1, 1, 0)}. A150709

Numerators of continued fraction convergents to sqrt(863). A42666