Properties of the Number -139230

One Hundred Thirty-Nine Thousand Two Hundred Thirty

Basics

Value: -139231 → -139230 → -139229

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 5 × 7 × 13 × 17

Divisors: 1, 2, 3, 5, 6, 7, 9, 10, 13, 14

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100001111111011110

Octal: -417736

Duodecimal: -686A6

Hexadecimal: -21fde

Square: 19384992900

Square Root: 373.13536417766676

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) = n*(n-1)*(n-2)*(n+3)/12. A117662

Coefficients of Chebyshev polynomials. A5583

Number of exterior points formed by extending diagonals of n-gon in general position. A5701

Dirichlet g.f.: ∏_k>=2 1 / (1 - k^-s)^binomial(k+3,4). A344204

a(n) is the first number with a total of exactly n 3's in the decimal digits of its divisors. A387464

Ninth column (m=8) of (1,3)-Pascal triangle A095660. A95664

Numbers with prime factorization pqrstu². A189985

Numbers k that are norm-superabundant in Gaussian integers, i.e., A103230(m)/m² < A103230(k)/k² for all m < k. A332321

Number of scalars which can be constructed from the Riemann tensor and metric tensor in n dimensions. A50297

Numbers k such that φ(k) < k/5. A66765