129042932 has 12 divisors (see below), whose sum is σ = 228018336. Its totient is φ = 63894840.

The previous prime is 129042931. The next prime is 129042961. The reversal of 129042932 is 239240921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129042931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156194 + ... + 157017.

It is an arithmetic number, because the mean of its divisors is an integer number (19001528).

Almost surely, 2^129042932 is an apocalyptic number.

It is an amenable number.

129042932 is a deficient number, since it is larger than the sum of its proper divisors (98975404).

129042932 is a wasteful number, since it uses less digits than its factorization.

129042932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313318 (or 313316 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 129042932 is about 11359.7065102933. The cubic root of 129042932 is about 505.3334816583. Note that the first 3 decimals are identical.

The spelling of 129042932 in words is "one hundred twenty-nine million, forty-two thousand, nine hundred thirty-two".