Properties of the Number 15442

Fifteen Thousand Four Hundred Forty-Two

Basics

Value: 15441 → 15442 → 15443

Parity: even

Prime: No

Previous Prime: 15439

Next Prime: 15443

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 7 × 1103

Divisors: 1, 2, 7, 14, 1103, 2206, 7721, 15442

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11110001010010

Octal: 36122

Duodecimal: 8B2A

Hexadecimal: 3c52

Square: 238455364

Square Root: 124.26584406022437

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

Number of reduced words of length n in the Weyl group D₇. A162210

Numbers n such that P(4n) is prime, where P(m) is the number of partitions of m. A111045

Triangle read by rows: row n gives coefficients of expansion of q-tangent number T_2n+1(q) in powers of q. A143194

a(n) = ∑_j=1..n ∑_i=1..n (j mod i). A367379

Numbers n such that 2ⁿ'-1 is prime, where n' is the arithmetic derivative of n. A189992

Triangle read by rows in which row n (n >= 1) gives coefficients in expansion of the polynomial f(n) * ∏_i=1..n-1 f(2i), where f(k) = (1 - x^k)/(1-x). A162206

a(n) = a(n-1) + 7·a(n-2), a(0)=0, a(1)=1. A15442

Number of ways to place 6 nonattacking knights on an n X n board. A178499

Powers but not squares which are sum of consecutive primes less than 10⁷ ordered according to the proximity of the first prime of the sum to the first prime: 2. A227319

Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero. A299341