Properties of the Number -145021

One Hundred Forty-Five Thousand Twenty-One

Basics

Value: -145022 → -145021 → -145020

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 145021

Divisors: 1, 145021

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -100011011001111101

Octal: -433175

Duodecimal: -6BB11

Hexadecimal: -2367d

Square: 21031090441

Square Root: 380.81622864578657

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

First member of a prime 5-tuple in a 2p-1 progression. A57328

a(n) = ∑_k=3..n binomial(k,3) * floor(n/k). A366971

Primes starting a Cunningham chain of the second kind of length 5. A110022

Smallest primes starting a complete four iterations Cunningham chain of the first or second kind. A110027

Number of binary strings of length n with no substrings equal to 0000 0101 or 0111. A164433

Beginning with 13, least prime such that concatenation of first n terms and its digit reversal both are primes. A382898