Properties of the Number -145215

One Hundred Forty-Five Thousand Two Hundred Fifteen

Basics

Value: -145216 → -145215 → -145214

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 7 × 461

Divisors: 1, 3, 5, 7, 9, 15, 21, 35, 45, 63

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100011011100111111

Octal: -433477

Duodecimal: -70053

Hexadecimal: -2373f

Square: 21087396225

Square Root: 381.0708595523935

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

Number of ordered 9-tuples of distinct pairwise coprime positive integers with largest element n. A186980

Solutions to abs(σ(x+1) - σ(x)) = 2. Divisor sums of·and its neighbor x+1 differ from each other by 2. A112645

Numbers n such that floor(antisigma(n) / σ(n)) = floor(antisigma(n+1) / σ(n+1)). A244666

Numbers m such that the δ(m) = abs(σ(m+1)/(m+1) - σ(m)/(m)) is smaller than δ(k) for all k < m. A335071

Numbers n such that the perfect deficiency of n (A109883) equals the perfect deficiency of n + 1. A110018