129239102 has 16 divisors (see below), whose sum is σ = 206649600. Its totient is φ = 60442200.

The previous prime is 129239101. The next prime is 129239111. The reversal of 129239102 is 201932921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129239101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18524 + ... + 24527.

It is an arithmetic number, because the mean of its divisors is an integer number (12915600).

Almost surely, 2^129239102 is an apocalyptic number.

129239102 is a deficient number, since it is larger than the sum of its proper divisors (77410498).

129239102 is a wasteful number, since it uses less digits than its factorization.

129239102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43151.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 129239102 is about 11368.3376973065. The cubic root of 129239102 is about 505.5894199395.

The spelling of 129239102 in words is "one hundred twenty-nine million, two hundred thirty-nine thousand, one hundred two".