129033142 has 32 divisors (see below), whose sum is σ = 237818880. Its totient is φ = 51269760.

The previous prime is 129033139. The next prime is 129033169. The reversal of 129033142 is 241330921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7342 + ... + 17662.

It is an arithmetic number, because the mean of its divisors is an integer number (7431840).

Almost surely, 2^129033142 is an apocalyptic number.

129033142 is a deficient number, since it is larger than the sum of its proper divisors (108785738).

129033142 is a wasteful number, since it uses less digits than its factorization.

129033142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10396.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 129033142 is about 11359.2755931001. The cubic root of 129033142 is about 505.3207020874.

The spelling of 129033142 in words is "one hundred twenty-nine million, thirty-three thousand, one hundred forty-two".