Properties of the Number 40842

Forty Thousand Eight Hundred Forty-Two

Basics

Value: 40841 → 40842 → 40843

Parity: even

Prime: No

Previous Prime: 40841

Next Prime: 40847

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 2269

Divisors: 1, 2, 3, 6, 9, 18, 2269, 4538, 6807, 13614

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001111110001010

Octal: 117612

Duodecimal: 1B776

Hexadecimal: 9f8a

Square: 1668068964

Square Root: 202.09403751719148

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

Coordination sequence for (3,5,5) tiling of hyperbolic plane. A265076

Number of n X 2 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 4,3,0,1,2 for x=0,1,2,3,4. A197229

Numbers n such that if x = σ(n)-φ(n)+τ(n)-n then n = σ(x)-φ(x)+τ(x)-x. A238229

a(n) = 1458·n + 18. A157505

Least positive integer m > 1 such that 1 - m^k + m^2k - m^3k + m^4k is prime, where k = A003592(n). A181980

Number of positive integers <= 2ⁿ of form 3 x² + 3 y². A54161

Roman numerals for n evaluated as if in base 36. A73421

Poincaré series [or Poincare series] P(C_6,2; x). A124614

Continued fraction for sqrt(872). A40842