Properties of the Number -127905

One Hundred Twenty-Seven Thousand Nine Hundred Five

Basics

Value: -127906 → -127905 → -127904

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 8527

Divisors: 1, 3, 5, 15, 8527, 25581, 42635, 127905

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11111001110100001

Octal: -371641

Duodecimal: -62029

Hexadecimal: -1f3a1

Square: 16359689025

Square Root: 357.6380852202405

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

Coefficients of expansion of 1/sqrt(1 - 10·x + 9·x²); also, a(n) is the central coefficient of (1 + 5·x + 4·x²)ⁿ. A84771

Square array read by descending antidiagonals: T(n, k) where column k is the expansion of 1/sqrt(1 - 2*(k+1)*x + ((k-1)*x)²). A307883

Square array A(n,k) = (n!)² [xⁿ] BesselI(0, 2·sqrt(x))^k read by antidiagonals. A287316

A(n,k) is the sum of k-th powers of coefficients in full expansion of (z₁+z₂+...+z_n)ⁿ; square array A(n,k), n>=0, k>=0, read by antidiagonals. A245397

Sum of squares of coefficients in full expansion of (z1+z2+...+zn)ⁿ. A33935

The function W₅(2n) (see Borwein et al. reference for definition). A169714

Triangle read by rows: enumerates pairs of amicable permutations by rises. A259465

The function W_n(10) (see Borwein et al. reference for definition). A169713

Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where T(n,k) = ∑_j=0..n k^j * binomial(n,j) * binomial(2·j,j). A340970

Third binomial transform of binomial(n+6, 6). A81905