Properties of the Number 11142

Eleven Thousand One Hundred Forty-Two

Basics

Value: 11141 → 11142 → 11143

Parity: even

Prime: No

Previous Prime: 11131

Next Prime: 11149

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 619

Divisors: 1, 2, 3, 6, 9, 18, 619, 1238, 1857, 3714

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101110000110

Octal: 25606

Duodecimal: 6546

Hexadecimal: 2b86

Square: 124144164

Square Root: 105.55567251455508

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

G.f. satisfies: A(x) = 1/(1-x) * A(x²)*A(x³)*A(x⁴)*...*A(xⁿ)*... A129374

Number of subsets of {1,..,n} of cardinality >= 2 such that the elements of each counted subset are pairwise coprime. A276187

Lexicographically earliest increasing sequence which lists the positions of the zero digits in the sequence. A167519

Numbers which are the sum of their proper divisors containing the digit 7. A59466

Numbers k such that σ(k) = σ(k+1)+σ(k-1). A73500

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 1, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero. A305961

Sum of the fifth largest parts in the partitions of n into 7 parts. A308929

Number of parts in all partitions of n into even number of distinct parts. A238132

G.f. A(x) satisfies: A(x) = A(x³) / (1 - x)². A309677

a(n) = 81·n² - 44·n + 6. A156676