Properties of the Number 20119

Twenty Thousand One Hundred Nineteen

Basics

Value: 20118 → 20119 → 20120

Parity: odd

Prime: No

Previous Prime: 20117

Next Prime: 20123

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 11 × 31 × 59

Divisors: 1, 11, 31, 59, 341, 649, 1829, 20119

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100111010010111

Octal: 47227

Duodecimal: B787

Hexadecimal: 4e97

Square: 404774161

Square Root: 141.84146079338015

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

T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s. A297314

Irregular triangle read by rows: T(n,k) is the number of endofunctions on [n] whose fourth-largest component has size exactly k; n >= 0, 0 <= k <= floor(n/4). A350275

Table read by antidiagonals: T(n,k) = number of labeled partitions of (n,k) into pairs (i,j). A108470

Setwise difference A340150 \ A340076. A340151

Number of 2 X n 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s. A297315

Choix de Bruxelles (version 1): irregular table read by rows in which row n lists all the legal numbers that can be reached by halving or doubling some substring of the decimal expansion of n. A323286

Ceiling of γ(n+6/7)/γ(6/7). A20119

Numbers m such that τ(m) = 2 * τ(m + 1) and simultaneously σ(m) = 2 * σ(m + 1), where τ(k) = A000005(k) and σ(k) = A000203(k). A353034