Properties of the Number -161221

One Hundred Sixty-One Thousand Two Hundred Twenty-One

Basics

Value: -161222 → -161221 → -161220

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 161221

Divisors: 1, 161221

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -100111010111000101

Octal: -472705

Duodecimal: -79371

Hexadecimal: -275c5

Square: 25992210841

Square Root: 401.52334925879467

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 parking functions of order n for which the third spot is lucky. A372843

Triangle read by rows: T(n,k) is the number of parking functions of order n where the k-th car is lucky. A374756

Primes of the form prime(n)*prime(n·2)+2. A78622