Properties of the Number -126126

One Hundred Twenty-Six Thousand One Hundred Twenty-Six

Basics

Value: -126127 → -126126 → -126125

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 7 ² × 11 × 13

Divisors: 1, 2, 3, 6, 7, 9, 11, 13, 14, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -11110110010101110

Octal: -366256

Duodecimal: -60BA6

Hexadecimal: -1ecae

Square: 15907767876

Square Root: 355.14222503104304

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) = ∑_{k = 0..n-1} (-1)^k*binomial(n,k)*binomial(n-1,k)². A361710

Lagrange inversion, or reversion, for divided power series with odd powers only. A277394

Square array read by antidiagonals downwards: T(n,k) = (n·k)!/(k!ⁿ*n!), (n>=1, k>=1), the number of ways of dividing nk labeled items into n unlabeled boxes with k items in each box. A60540

Coefficient triangle of certain polynomials N(5; m,x). A62190

Number A(n,k) of permutations of k indistinguishable copies of 1..n with every partial sum <= the same partial sum averaged over all permutations; square array A(n,k), n>=0, k>=0, read by antidiagonals. A215561

4-dimensional figurate numbers: a(n) = (6·n-2)*binomial(n+2,3)/4. A2419

a(n) = (3·n)! / ((n+1)*(n!)³). A7004

a(n) = (1/6)*multinomial(3·n;n,n,n). A60542

Trace of Vandermonde matrix of numbers 1,2,...,n, i.e., the matrix A with A[i,j] = i^j-1, 1 <= i <= n, 1 <= j <= n. A60946

Triangle of Stirling numbers of order 5. A59024