Properties of the Number 72134

Seventy-Two Thousand One Hundred Thirty-Four

Basics

Value: 72133 → 72134 → 72135

Parity: even

Prime: No

Previous Prime: 72109

Next Prime: 72139

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 36067

Divisors: 1, 2, 36067, 72134

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10001100111000110

Octal: 214706

Duodecimal: 358B2

Hexadecimal: 119c6

Square: 5203313956

Square Root: 268.57773548825674

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

Smaller of two consecutive semiprimes which are anagrams of each other. A228135

Second generation sequence in which each number is skipped that can be written as sum of distinct previous entries. To make the first generation we start with all natural numbers: this gives the powers of 2 (A000079). For the second generation we start with the natural numbers from which are removed the numbers of the first generation. A72134

a(n) is the numerator of the coefficient c_2n+1 in the expansion ∑_k=1..j 1/(k*(k+1)/2)² = ∑_m>=0 c_m/j^m for large values of j. A340277