Properties of the Number -204121

Two Hundred Four Thousand One Hundred Twenty-One

Basics

Value: -204122 → -204121 → -204120

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 43 × 47 × 101

Divisors: 1, 43, 47, 101, 2021, 4343, 4747, 204121

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110001110101011001

Octal: -616531

Duodecimal: -9A161

Hexadecimal: -31d59

Square: 41665382641

Square Root: 451.79752102020217

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 solutions to +-1² +- 2² +- 3² +- ... +- n² = n. A348165

Triangle T(n,k), n>=3, 3<=k<=n, read by rows: T(n,k) = number of simple graphs on n labeled nodes, where each maximally connected subgraph consists of a single node or has a unique cycle of length k. A144212

Strong pseudoprimes to base 95. A20321

Nonnegative numbers n such that n⁴² + 42 is prime. A104111