Properties of the Number -135721

One Hundred Thirty-Five Thousand Seven Hundred Twenty-One

Basics

Value: -135722 → -135721 → -135720

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 135721

Divisors: 1, 135721

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100001001000101001

Octal: -411051

Duodecimal: -66661

Hexadecimal: -21229

Square: 18420189841

Square Root: 368.4033116029225

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

Primitive part of Fibonacci(n). A61446

Prime hypotenuses of Pythagorean triangles with a prime leg. A67756

Smallest primitive prime factor of Fibonacci number F(n), or 1 if F(n) has no primitive prime factor. A1578

Largest prime factor of n-th Fibonacci number. A60385

Expansion of x*(1+3·x+2·x²)/((1+x+x²)*(1-x-x²)). A100886

Half the number of n X 2 binary arrays with every element equal to exactly one or two of its horizontal and vertical neighbors. A185828

Values of C (the hypotenuse) of a Pythagorean triangle with A (the short leg) and C both prime and part of a twin prime. A51859

Product of primitive prime factors of Fibonacci(n). A178763

a(n+1) - 3·a(n) + a(n-1) = (2/3)(1+wⁿ⁺¹+w²ⁿ⁺²), where w = exp(2 π I / 3). A71618

Expansion of (1-x)*(2·x²+2·x+1) / ((x²-x-1)*(x²+x+1)). A111734