Properties of the Number 42686

Forty-Two Thousand Six Hundred Eighty-Six

Basics

Value: 42685 → 42686 → 42687

Parity: even

Prime: No

Previous Prime: 42683

Next Prime: 42689

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 7 × 3049

Divisors: 1, 2, 7, 14, 3049, 6098, 21343, 42686

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1010011010111110

Octal: 123276

Duodecimal: 20852

Hexadecimal: a6be

Square: 1822094596

Square Root: 206.60590504629823

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 (n+1)X(7+1) 0..1 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically. A253697

Floor of sum of the first n² square roots. A138357

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, 0), (-1, 1, -1), (0, 1, 1), (1, 0, 0)}. A149984

Numerators of continued fraction convergents to sqrt(873). A42686