12704129 has 2 divisors, whose sum is σ = 12704130. Its totient is φ = 12704128.

The previous prime is 12704113. The next prime is 12704161. The reversal of 12704129 is 92140721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8862529 + 3841600 = 2977^2 + 1960^2 .

It is a cyclic number.

It is not a de Polignac number, because 12704129 - 2⁴ = 12704113 is a prime.

It is a super-2 number, since 2×12704129² = 322789787297282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12704098 and 12704107.

It is not a weakly prime, because it can be changed into another prime (12704189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6352064 + 6352065.

It is an arithmetic number, because the mean of its divisors is an integer number (6352065).

Almost surely, 2^12704129 is an apocalyptic number.

It is an amenable number.

12704129 is a deficient number, since it is larger than the sum of its proper divisors (1).

12704129 is an equidigital number, since it uses as much as digits as its factorization.

12704129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 12704129 is about 3564.2852018322. The cubic root of 12704129 is about 233.3359371592.

The spelling of 12704129 in words is "twelve million, seven hundred four thousand, one hundred twenty-nine".