Properties of the Number -105995

One Hundred Five Thousand Nine Hundred Ninety-Five

Basics

Value: -105996 → -105995 → -105994

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 5 × 17 × 29 × 43

Divisors: 1, 5, 17, 29, 43, 85, 145, 215, 493, 731

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: Yes

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Representations

Binary: -11001111000001011

Octal: -317013

Duodecimal: -5140B

Hexadecimal: -19e0b

Square: 11234940025

Square Root: 325.568733142481

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

a(n) = 1² + 3² + 5² + 7² + ... + (2·n-1)² = n*(4·n² - 1)/3. A447

Dodecahedral numbers: a(n) = n*(3·n - 1)*(3·n - 2)/2. A6566

Odd tetrahedral numbers: a(n) = (4·n+1)*(4·n+2)*(4·n+3)/6. A15219

T(n,k)=Number of nXk 0..1 arrays with rows and antidiagonals unimodal. A223680

Squarefree tetrahedral numbers. A70755

Binomial coefficients C(87,n). A17803

Tetrahedral numbers n*(n+1)*(n+2)/6 with n, n+1 and n+2 nonprime. A152622

a(n) = (5·n + 5)*(5·n + 6)*(5·n + 7)/6. A300523

Binomial coefficients C(n,84). A17748