Properties of the Number -145145

One Hundred Forty-Five Thousand One Hundred Forty-Five

Basics

Value: -145146 → -145145 → -145144

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 7 × 11 × 13 × 29

Divisors: 1, 5, 7, 11, 13, 29, 35, 55, 65, 77

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -100011011011111001

Octal: -433371

Duodecimal: -6BBB5

Hexadecimal: -236f9

Square: 21067071025

Square Root: 380.9790020460445

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

Numbers n such that σ(n) = 3*φ(n). A68391

Odd integers m such that φ(m) | σ(m). A15715

Number of (w,x,y,z) with all terms in {1,...,n} and w > x < y >= z. A212501

Numbers such that the sum of prime factors without repetition divides the product of prime factors without repetition and each division yields a greater quotient. A380487

a(n) = n*(n-1)*(n-2)*(n-3)*(n-4)*(2·n-1)/72. A55504

Balanced numbers k such that k mod 12 = 5. A110598

Number of (n+1) X (1+1) 0..3 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with values 0..3 introduced in row major order. A231356

Partial sums of A100119. Sum of first n of the n-th centered n-gonal numbers. A130218