129065139 has 48 divisors (see below), whose sum is σ = 231761088. Its totient is φ = 67516416.

The previous prime is 129065137. The next prime is 129065159. The reversal of 129065139 is 931560921.

It is not a de Polignac number, because 129065139 - 2¹ = 129065137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129065137) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37999 + ... + 41255.

It is an arithmetic number, because the mean of its divisors is an integer number (4828356).

Almost surely, 2^129065139 is an apocalyptic number.

129065139 is a deficient number, since it is larger than the sum of its proper divisors (102695949).

129065139 is a wasteful number, since it uses less digits than its factorization.

129065139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324 (or 3321 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 129065139 is about 11360.6839142721. The cubic root of 129065139 is about 505.3624676110.

The spelling of 129065139 in words is "one hundred twenty-nine million, sixty-five thousand, one hundred thirty-nine".