129056339 has 2 divisors, whose sum is σ = 129056340. Its totient is φ = 129056338.

The previous prime is 129056321. The next prime is 129056371. The reversal of 129056339 is 933650921.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129056339 is a prime.

It is not a weakly prime, because it can be changed into another prime (129056309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64528169 + 64528170.

It is an arithmetic number, because the mean of its divisors is an integer number (64528170).

Almost surely, 2^129056339 is an apocalyptic number.

129056339 is a deficient number, since it is larger than the sum of its proper divisors (1).

129056339 is an equidigital number, since it uses as much as digits as its factorization.

129056339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 129056339 is about 11360.2966070433. The cubic root of 129056339 is about 505.3509817034.

The spelling of 129056339 in words is "one hundred twenty-nine million, fifty-six thousand, three hundred thirty-nine".