Properties of the Number -128124

One Hundred Twenty-Eight Thousand One Hundred Twenty-Four

Basics

Value: -128125 → -128124 → -128123

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 3559

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 36, 3559

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11111010001111100

Octal: -372174

Duodecimal: -62190

Hexadecimal: -1f47c

Square: 16415759376

Square Root: 357.9441297185917

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

Irregular triangle read by rows: T(n,k) = ∑_i=0..k (-1)ⁱ * binomial(3·n+1,i) * binomial(k+3-i,3)ⁿ, 0 <= k <= 3*(n-1). A174266

G.f.: ∑_k>=1 (k⁴ * x^k² / ∏_j=1..k (1 - x^j)). A333152

Number of permutations of 3 indistinguishable copies of 1..n with exactly 4 adjacent element pairs in decreasing order. A151634

Number of permutations of 3 indistinguishable copies of 1..n with exactly 5 adjacent element pairs in decreasing order. A151635

Triangle in which the g.f. for row n is (1-x)^4·n+1 * ∑_j>=0 binomial(n+j-1,j)⁴ * x^j, read by rows of k=0..3·n terms. A262014