12729113 has 2 divisors, whose sum is σ = 12729114. Its totient is φ = 12729112.

The previous prime is 12729109. The next prime is 12729133. The reversal of 12729113 is 31192721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9535744 + 3193369 = 3088^2 + 1787^2 .

It is a cyclic number.

It is not a de Polignac number, because 12729113 - 2² = 12729109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12729133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6364556 + 6364557.

It is an arithmetic number, because the mean of its divisors is an integer number (6364557).

Almost surely, 2^12729113 is an apocalyptic number.

It is an amenable number.

12729113 is a deficient number, since it is larger than the sum of its proper divisors (1).

12729113 is an equidigital number, since it uses as much as digits as its factorization.

12729113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 26.

The square root of 12729113 is about 3567.7882504431. The cubic root of 12729113 is about 233.4887968495.

The spelling of 12729113 in words is "twelve million, seven hundred twenty-nine thousand, one hundred thirteen".