Properties of the Number 19124

Nineteen Thousand One Hundred Twenty-Four

Basics

Value: 19123 → 19124 → 19125

Parity: even

Prime: No

Previous Prime: 19121

Next Prime: 19139

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 7 × 683

Divisors: 1, 2, 4, 7, 14, 28, 683, 1366, 2732, 4781

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101010110100

Octal: 45264

Duodecimal: B098

Hexadecimal: 4ab4

Square: 365727376

Square Root: 138.28955130450024

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

Consider n equally spaced points along a line and join every pair of points by a semicircle above the line; a(n) is the number of intersection points. A290447

T(n,k)=Number of nXk 0..3 arrays of the sum of the corresponding element, the element to the east and the element to the south in a larger (n+1)X(k+1) 0..1 array. A229392

a(n) = n*(n³ - n + 2)/2. A101374

a(n) = ∑_d∣n rad(d)^n/d, where rad(d) = A007947(d) is the squarefree kernel of d. A95001

a(n) = least m such that sum of m reciprocal primes starting with n-th prime is >1. A137368

Number of idempotent 3X3 0..n matrices. A222822

Number of n X n 0..3 arrays of the sum of the corresponding element, the element to the east and the element to the south in a larger (n+1)X(n+1) 0..1 array. A229385

Number of n X 3 0..3 arrays of the sum of the corresponding element, the element to the east and the element to the south in a larger (n+1) X 4 0..1 array. A229387

Number of length n sequences on alphabet {0,1,2} that contain all of 00, 01, 02, 10, 11, 12, 20, 21, 22 as (possibly overlapping) contiguous subsequences. A243862

Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite EUO = EU-1 Nan[AlnSi112-nO224] starting with a T5 atom. A19124