Properties of the Number 7149

Seven Thousand One Hundred Forty-Nine

Basics

Value: 7148 → 7149 → 7150

Parity: odd

Prime: No

Previous Prime: 7129

Next Prime: 7151

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 2383

Divisors: 1, 3, 2383, 7149

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101111101101

Octal: 15755

Duodecimal: 4179

Hexadecimal: 1bed

Square: 51108201

Square Root: 84.55175929571188

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

Fourth-order spt function. A221142

Expansion of e.g.f. ∏_k>=1 (1 + (exp(x) - 1)^k/k!). A305547

Potential magic constants of 7 X 7 magic squares composed of consecutive primes. A188536

Number of length n 0..2 arrays with each partial sum starting from the beginning no more than one standard deviation from its mean. A244782

Number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 203", based on the 5-celled von Neumann neighborhood. A270725

Numerators of the partial alternating sums of the reciprocals of the sum of unitary divisors function (A034448). A379515

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of B(x)^k, where B(x) is the g.f. of A381568. A381567

G.f. A(x) satisfies A(x) = (1 + x·A(x·A(x)))². A381568

Integers k that are equal to the sum of at least two distinct of their anagrams, which must have the same number of digits as k. A384433

Becomes prime or 4 after exactly 8 iterations of f(x) = sum of prime factors of x. A48130