Properties of the Number 19142

Nineteen Thousand One Hundred Forty-Two

Basics

Value: 19141 → 19142 → 19143

Parity: even

Prime: No

Previous Prime: 19141

Next Prime: 19157

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 17 × 563

Divisors: 1, 2, 17, 34, 563, 1126, 9571, 19142

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100101011000110

Octal: 45306

Duodecimal: B0B2

Hexadecimal: 4ac6

Square: 366416164

Square Root: 138.35461683659133

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

Numbers k such that k, k+1, k+2 and k+3 have the same number of divisors. A6601

Numbers k such that k through k+4 all have the same number of divisors. A49051

Hoggatt sequence with parameter d=8. A5366

Number of partitions of n having (sum of odd parts) > (sum of even parts). A239262

Consider a decimal number of k>=2 digits x = d_k*10^k-1 + d_k-1*10^k-2 + ... + d₂*10 + d₁ and the transform T(x)-> (d_k+d_k-1 mod 10)*10^k-1 + (d_k-1+d_k-2 mod 10)*10^k-2 + ... + (d₂+d₁ mod 10)*10 + (d₁+d(k) mod 10). Sequence lists the numbers·such that T(x) divides x. A244286

a(0) = 1; thereafter a(n) = 10·n² - 5·n + 2. A383466

Numbers k such that π^k - 1/φ is closer to its nearest integer than any value of π^j - 1/φ for 1 <= j < k. A80281

Number of nX1 1..4 arrays with every element value z a city block distance of exactly z from another element value z. A209390

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 307", based on the 5-celled von Neumann neighborhood. A271166

G.f.: ∑_k>=0 A000009(k)² * x^k / ∑_k>=0 A000041(k) * x^k. A305350