Properties of the Number -102020

One Hundred Two Thousand Twenty

Basics

Value: -102021 → -102020 → -102019

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 5

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 5 × 5101

Divisors: 1, 2, 4, 5, 10, 20, 5101, 10202, 20404, 25505

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

9108 Try Today's Challenge

Representations

Binary: -11000111010000100

Octal: -307204

Duodecimal: -4B058

Hexadecimal: -18e84

Square: 10408080400

Square Root: 319.4056981332675

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

Numbers with digits in {0,1,2} such that every other digit is strictly less than its neighbors. A306105

Numbers k such that k² + 1 is a palindrome. A27719

Numbers <= 10⁶ with valid Luhn mod 10 check digit, sorted first by check digit, then lexicographically. A249855