Properties of the Number 2120

Two Thousand One Hundred Twenty

Basics

Value: 2119 → 2120 → 2121

Parity: even

Prime: No

Previous Prime: 2113

Next Prime: 2129

Digit Sum: 5

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 5 × 53

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 53, 106

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100001001000

Octal: 4110

Duodecimal: 1288

Hexadecimal: 848

Square: 4494400

Square Root: 46.04345773288535

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

Fine's sequence (or Fine numbers): number of relations of valence >= 1 on an n-set; also number of ordered rooted trees with n nodes having root of even degree. A957

Number of fountains of n coins. A5169

a(n) = n² + 4. A87475

Multiples of 20 containing a 20 in their decimal representation. A121040

Representation of n in base of Catalan numbers (a classic greedy version). A14418

Numbers whose sum of digits is 5. A52219

n written in fractional base 3/2. A24629

Inverse binomial matrix applied to A110877. A126093

Numbers k such that A102489(k) is divisible by k. A32563

In the decimal expansion of π, the string "0" is found at position 32 counting from the first digit after the decimal point. The string "32" is found at position 15, the string "15" at position 3, the string "3" at position 9, etc. A97614