Properties of the Number -121392

One Hundred Twenty-One Thousand Three Hundred Ninety-Two

Basics

Value: -121393 → -121392 → -121391

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ⁴ × 3 ³ × 281

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 16, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11101101000110000

Octal: -355060

Duodecimal: -5A300

Hexadecimal: -1da30

Square: 14736017664

Square Root: 348.4135473829914

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

G.f. A(x) satisfies: [xⁿ] A(x)⁽ⁿ⁺¹(n+2)/2) = 0 for n>1 with a(0)=1 and a(1)=2. A250117

a(n) = Fibonacci(n) - 1. A71

Number of isosceles triangles that can be formed from the n² points of n X n grid of points (or geoboard). A186434

Numbers that have 12 terms in their Zeckendorf representation. A179252

a(n) = Fibonacci(2·n+2) - 1. A35508

Number of possible palindromic rows (or columns) in an n X n crossword puzzle. A131524

Strictly increasing list of F and F - 1, where F = A000045, the Fibonacci numbers. A258085

a(n) = Fibonacci(n) * Fibonacci(n+1) mod Fibonacci(n+2). A333599

a(n) = a(n-1) + a(n-3) + a(n-4). A115008

a(n) = F(n)*L(n+2) where F=Fibonacci and L=Lucas numbers. A128533