Properties of the Number 81002

Eighty-One Thousand Two

Basics

Value: 81001 → 81002 → 81003

Parity: even

Prime: No

Previous Prime: 81001

Next Prime: 81013

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 × 101 × 401

Divisors: 1, 2, 101, 202, 401, 802, 40501, 81002

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011110001101010

Octal: 236152

Duodecimal: 3AA62

Hexadecimal: 13c6a

Square: 6561324004

Square Root: 284.60850303530987

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

Antidiagonal sums of the convolution array A213768. A213770

Least positive integer k such that both k and k·n belong to the set {m>0: prime(m)+2 is prime with prime(prime(m)+2) = prime(prime(m))+6}. A261528

Expansion of ∏_{i>=1, j>=1} ((1 + x^i·j)/(1 - x^i·j))^i·j. A318579

a(n) = Fibonacci(4n) + 1, or Fibonacci(2n-1)*Lucas(2n+1). A81002