Properties of the Number -123985

One Hundred Twenty-Three Thousand Nine Hundred Eighty-Five

Basics

Value: -123986 → -123985 → -123984

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 × 137 × 181

Divisors: 1, 5, 137, 181, 685, 905, 24797, 123985

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11110010001010001

Octal: -362121

Duodecimal: -5B901

Hexadecimal: -1e451

Square: 15372280225

Square Root: 352.115038020247

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) = ∑_k=0..3 f(n+k)² where f=A130519. A238604

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 78. A31666