129346538 has 16 divisors (see below), whose sum is σ = 198647424. Its totient is φ = 63137760.

The previous prime is 129346517. The next prime is 129346541. The reversal of 129346538 is 835643921.

It is a junction number, because it is equal to n+sod(n) for n = 129346495 and 129346504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41453 + ... + 44463.

It is an arithmetic number, because the mean of its divisors is an integer number (12415464).

Almost surely, 2^129346538 is an apocalyptic number.

129346538 is a deficient number, since it is larger than the sum of its proper divisors (69300886).

129346538 is a wasteful number, since it uses less digits than its factorization.

129346538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3517.

The product of its digits is 155520, while the sum is 41.

The square root of 129346538 is about 11373.0619447887. The cubic root of 129346538 is about 505.7294793576.

The spelling of 129346538 in words is "one hundred twenty-nine million, three hundred forty-six thousand, five hundred thirty-eight".