129134039 has 2 divisors, whose sum is σ = 129134040. Its totient is φ = 129134038.

The previous prime is 129134021. The next prime is 129134041. The reversal of 129134039 is 930431921.

It is a strong prime.

It is an emirp because it is prime and its reverse (930431921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129134039 - 2⁸ = 129133783 is a prime.

Together with 129134041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 129133996 and 129134014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129134059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64567019 + 64567020.

It is an arithmetic number, because the mean of its divisors is an integer number (64567020).

Almost surely, 2^129134039 is an apocalyptic number.

129134039 is a deficient number, since it is larger than the sum of its proper divisors (1).

129134039 is an equidigital number, since it uses as much as digits as its factorization.

129134039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 129134039 is about 11363.7158975399. The cubic root of 129134039 is about 505.4523790054.

The spelling of 129134039 in words is "one hundred twenty-nine million, one hundred thirty-four thousand, thirty-nine".