Properties of the Number -12005

Twelve Thousand Five

Basics

Value: -12006 → -12005 → -12004

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 5 × 7 ⁴

Divisors: 1, 5, 7, 35, 49, 245, 343, 1715, 2401, 12005

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10111011100101

Octal: -27345

Duodecimal: -6B45

Hexadecimal: -2ee5

Square: 144120025

Square Root: 109.5673308974897

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

Matrix log of triangle A111830, which shifts columns left and up under matrix 7th power; these terms are the result of multiplying each element in row n and column k by (n-k)!. A111833

Irregular triangle read by rows of normalized Girard-Waring formula (cf. A210258), for m=7 data values. A288245

Sum of n-th powers of the roots of x³ + 7·x² + 14·x + 7. A322459

Sum of n-th powers of the roots of x³ - 49·x + 49. A322458

a(n) = 5·n². A33429

a(n) = A276086(A276086(n)), where A276086 is the primorial base exp-function. A276087

Numbers of the form 5ⁱ*7^j with i, j >= 0. A3595

Number of 4's in the last section of the set of partitions of n. A182714

a(n) = 7·a(n-1) - 14·a(n-2) + 7·a(n-3) with a(1)=7, a(2)=21, a(3)=70. A215494

Numbers whose prime factors are 5 and 7. A33851