Properties of the Number 1143

One Thousand One Hundred Forty-Three

Basics

Value: 1142 → 1143 → 1144

Parity: odd

Prime: No

Previous Prime: 1129

Next Prime: 1151

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 127

Divisors: 1, 3, 9, 127, 381, 1143

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001110111

Octal: 2167

Duodecimal: 7B3

Hexadecimal: 477

Square: 1306449

Square Root: 33.80828300875393

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

a(n) = [qⁿ] (1 - q)ⁿ / ∏_j=1..n (1 - q^j). A281425

Gullwing sequence (see Comments lines for precise definition). A187220

Number of partitions of n with parts >= 9. A185329

Triangle read by rows: number of set partitions of n elements with k connectors, 0<=k<n. A185982

Numbers of the form n*(7n+-1)/2. A57570

Numbers whose binary indices and prime indices have the same sum. A372427

Number of partitions of n in which the least part is 9. A26802

Numbers k such that k² divides 19^k-1. A128399

Numbers k whose largest divisor <= sqrt(k) equals 9. A162529

a(n)=A089551(n)/2. A89558