Properties of the Number -121381

One Hundred Twenty-One Thousand Three Hundred Eighty-One

Basics

Value: -121382 → -121381 → -121380

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 13 × 9337

Divisors: 1, 13, 9337, 121381

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11101101000100101

Octal: -355045

Duodecimal: -5A2B1

Hexadecimal: -1da25

Square: 14733347161

Square Root: 348.39776118683653

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

Take the first n numbers written in base 5, concatenate them, then convert from base 5 to base 10. A48437

Sieve performed by successive iterations of steps where step m is: keep m terms, remove the next 3 and repeat; as m = 1,2,3,.. the remaining terms form this sequence. A112561

Number of distinct coefficients in expansion related to enumeration of permutations of length n by length of longest subsequence. A68604

Number of (n+2)X(3+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0. A255086

The first n digits of the juxtaposition of the base-5 numbers converted to decimal. A55146

y value of the local maximum of a discrete plot of the result of concatenating the integers one to n in base x. A175916

a(0)=0, a(n+1) is the least k>a(n) such that k+a(n)+n+1 is a Fibonacci number. A215006