Properties of the Number 7126

Seven Thousand One Hundred Twenty-Six

Basics

Value: 7125 → 7126 → 7127

Parity: even

Prime: No

Previous Prime: 7121

Next Prime: 7127

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 7 × 509

Divisors: 1, 2, 7, 14, 509, 1018, 3563, 7126

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101111010110

Octal: 15726

Duodecimal: 415A

Hexadecimal: 1bd6

Square: 50779876

Square Root: 84.41563836162112

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

Total number of positive integers below 10ⁿ requiring 12 positive biquadrates in their representation as sum of biquadrates. A186669

Number of biquanimous subsets of {1..n}. Sets with a subset having the same sum as the complement. A371791

a(n) = G_n(5), where G_n(k) is the Goodstein function defined in A266201. A266204

T(n,k)=Number of length n+2 0..k arrays with the sum of second differences multiplied by some arrangement of +-1 equal to zero. A250561

Sum of the squared parts of the partitions of n into exactly two parts. A226141

Triangle read by rows: T(n,k) is the number of free polyominoes with n cells and length k, n >= 1, k = 1..n. A379624

Collatz (or 3x+1) trajectory starting at 703. A161021

Triangle read by rows: T(n,k) is the number of bicolored cubic graphs on 2n unlabeled vertices with k vertices of the first color, n >= 0, 0 <= k <= 2·n. A361361

McKay-Thompson series of class 5B for the Monster group with a(0) = -6. A106248

Number of rooted trees with n nodes such that no more than two subtrees corresponding to children of any node have the same number of nodes. A213920