129193412 has 24 divisors (see below), whose sum is σ = 231517440. Its totient is φ = 63053120.

The previous prime is 129193409. The next prime is 129193423. The reversal of 129193412 is 214391921.

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, 97289 + ... + 98607.

It is an arithmetic number, because the mean of its divisors is an integer number (9646560).

Almost surely, 2^129193412 is an apocalyptic number.

It is an amenable number.

129193412 is a deficient number, since it is larger than the sum of its proper divisors (102324028).

129193412 is a wasteful number, since it uses less digits than its factorization.

129193412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891 (or 1889 counting only the distinct ones).

The product of its digits is 3888, while the sum is 32.

The square root of 129193412 is about 11366.3279910444. The cubic root of 129193412 is about 505.5298324436.

The spelling of 129193412 in words is "one hundred twenty-nine million, one hundred ninety-three thousand, four hundred twelve".