Properties of the Number 1140

One Thousand One Hundred Forty

Basics

Value: 1139 → 1140 → 1141

Parity: even

Prime: No

Previous Prime: 1129

Next Prime: 1151

Digit Sum: 6

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 5 × 19

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 19

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: Yes

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Representations

Binary: 10001110100

Octal: 2164

Duodecimal: 7B0

Hexadecimal: 474

Square: 1299600

Square Root: 33.76388603226827

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

Tetrahedral (or triangular pyramidal) numbers: a(n) = C(n+2,3) = n*(n+1)*(n+2)/6. A292

Number of derangements of n where minimal cycle size is at least 3. A38205

Number of partitions of n into distinct parts in which the number of parts divides n. A102627

Triangle T(n,k), 0 <= k <= n, read by rows, defined by: T(0,0)=1, T(n,k)=0 if n < k, T(n,k) = T(n-1,k-1) + T(n-1,k) + T(n-1,k+1). A64189

Motzkin triangle, T, read by rows; T(0,0) = T(1,0) = T(1,1) = 1; for n >= 2, T(n,0) = 1, T(n,k) = T(n-1,k-2) + T(n-1,k-1) + T(n-1,k) for k = 1,2,...,n-1 and T(n,n) = T(n-1,n-2) + T(n-1,n-1). A26300

Coordination sequence for "hal" 3D uniform tiling. A299274

Number of alternating compositions of n, including twins (x,x). A344604

Numbers whose prime indices cannot be partitioned into constant blocks with distinct sums. A381636

6 times triangular numbers: a(n) = 3·n*(n+1). A28896

Sums of twin prime pairs. A54735