Properties of the Number -205921

Two Hundred Five Thousand Nine Hundred Twenty-One

Basics

Value: -205922 → -205921 → -205920

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 17 × 12113

Divisors: 1, 17, 12113, 205921

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

9108 Try Today's Challenge

Representations

Binary: -110010010001100001

Octal: -622141

Duodecimal: -9B201

Hexadecimal: -32461

Square: 42403458241

Square Root: 453.78519147279366

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) is the number of permutations of length n that avoid the pattern 321 and the mesh pattern (12, 277) or the same sequence for the mesh pattern (12, 337). A289604

Number of nX7 integer arrays with each element equal to the number of horizontal and antidiagonal neighbors not equal to itself. A265990