129405413 has 2 divisors, whose sum is σ = 129405414. Its totient is φ = 129405412.

The previous prime is 129405401. The next prime is 129405427. The reversal of 129405413 is 314504921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88021924 + 41383489 = 9382^2 + 6433^2 .

It is a cyclic number.

It is not a de Polignac number, because 129405413 - 2¹⁰ = 129404389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129405433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64702706 + 64702707.

It is an arithmetic number, because the mean of its divisors is an integer number (64702707).

Almost surely, 2^129405413 is an apocalyptic number.

It is an amenable number.

129405413 is a deficient number, since it is larger than the sum of its proper divisors (1).

129405413 is an equidigital number, since it uses as much as digits as its factorization.

129405413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 129405413 is about 11375.6500034064. The cubic root of 129405413 is about 505.8061991192.

The spelling of 129405413 in words is "one hundred twenty-nine million, four hundred five thousand, four hundred thirteen".