Properties of the Number 81042

Eighty-One Thousand Forty-Two

Basics

Value: 81041 → 81042 → 81043

Parity: even

Prime: No

Previous Prime: 81041

Next Prime: 81043

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 13 × 1039

Divisors: 1, 2, 3, 6, 13, 26, 39, 78, 1039, 2078

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011110010010010

Octal: 236222

Duodecimal: 3AA96

Hexadecimal: 13c92

Square: 6567805764

Square Root: 284.6787663314565

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 (3+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0000 0011 or 0101. A259217

Numbers n such that 221·2ⁿ-1 is prime. A50862

7th binomial transform of (1,6,0,0,0,0,0,0,...). A81042