Properties of the Number -129766

One Hundred Twenty-Nine Thousand Seven Hundred Sixty-Six

Basics

Value: -129767 → -129766 → -129765

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 × 7 × 13 × 23 × 31

Divisors: 1, 2, 7, 13, 14, 23, 26, 31, 46, 62

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: Yes

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Representations

Binary: -11111101011100110

Octal: -375346

Duodecimal: -6311A

Hexadecimal: -1fae6

Square: 16839214756

Square Root: 360.23048177521014

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

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

The number of inequivalent ways to color the vertices of a regular octahedron using at most n colors. A198833

T(n,k)=Number of nXk 0..3 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1)X(k+1) 0..3 array without adjacent equal elements in the latter. A229320

G.f. A(x) satisfies A097182(x·A(x)) = A(x) and so equals the ratio of the g.f.s of any two adjacent diagonals of triangle A097181. A97184

Squarefree tetrahedral numbers. A70755

G.f. A(x) satisfies A(x) = (1 + x / (1 - x·A(x))²)². A365120

Binomial coefficients C(93,n). A17809

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

Binomial coefficients C(n,90). A17754

a(n) = (32·n³ - 2·n)/3. A267031