Properties of the Number 12128

Twelve Thousand One Hundred Twenty-Eight

Basics

Value: 12127 → 12128 → 12129

Parity: even

Prime: No

Previous Prime: 12119

Next Prime: 12143

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ⁵ × 379

Divisors: 1, 2, 4, 8, 16, 32, 379, 758, 1516, 3032

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10111101100000

Octal: 27540

Duodecimal: 7028

Hexadecimal: 2f60

Square: 147088384

Square Root: 110.12719918348964

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 σ(k) = σ(k+8). A15876

a(n) is the smallest integer > a(n-1) such that {π^a(n)} < {π^a(n-1)}, where {x} = x - floor(x), a(1)=1. A137994

Value of n such that for any value of n, πⁿ is closer to its nearest integer than any value of π^k for 1 <= k < n. A80052

Numbers k such that the fractional part of π^k is less than 1/k. A153710

Numbers k such that k + the reversal of k is a square. A61230

a(0) = a(1) = 1; a(n) = a(n-1) + (n+1)*a(n-2). A59480

Matrix logarithm of triangle A111536. A111541

T(n,k)=Number of nXk binary arrays indicating whether each 2X2 subblock of a larger binary array has lexicographically increasing rows and columns, for some larger (n+1)X(k+1) binary array with rows and columns of the latter in lexicographically nondecreasing order. A227089

8-step Fibonacci sequence starting with 0,1,0,0,0,0,0,0. A251745

Number of perfect powers (A001597) not exceeding 2ⁿ. A70228