Properties of the Number -140

One Hundred Forty

Basics

Value: -141 → -140 → -139

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 5

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 5 × 7

Divisors: 1, 2, 4, 5, 7, 10, 14, 20, 28, 35

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10001100

Octal: -214

Duodecimal: -B8

Hexadecimal: -8c

Square: 19600

Square Root: 11.832159566199232

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

Expansion of reciprocal of Hauptmodul for Gamma₀(18). A92848

Expansion of (1-4·x)^7/2. A2423

McKay-Thompson series of class 18D for the Monster group. A62242

Expansion of q^-1 * (φ(q) / φ(q⁹) - 1) / 2 in powers of q³ where φ() is a Ramanujan θ function. A128111

Expansion of (1-4·x)^9/2. A2424

Regard triangle of rencontres numbers (see A008290) as infinite matrix, compute inverse, read by rows. A55137

Expansion of ∏_k>=1 (1 - q^k)⁸/(1 - q^7·k) in powers of q. A282942

T(j,k) are the numerators s in the representation R = s/t + (2/π)*u/v of the resistance between two nodes separated by the distance vector (j,k) in an infinite square lattice of one-ohm resistors, where T(j,k), j >= 0, 0 <= k <= j, is a triangle read by rows. A355565

G.f.: ∑_n>=0 xⁿ * (1 + xⁿ)ⁿ / (1 + xⁿ⁺¹)ⁿ⁺¹. A323557

Triangle read by rows: matrix 5th power of the Stirling-1 triangle A008275. A39817