129041768 has 16 divisors (see below), whose sum is σ = 254688000. Its totient is φ = 61124976.

The previous prime is 129041767. The next prime is 129041771. The reversal of 129041768 is 867140921.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (129041767) 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, 424328 + ... + 424631.

It is an arithmetic number, because the mean of its divisors is an integer number (15918000).

Almost surely, 2^129041768 is an apocalyptic number.

It is an amenable number.

129041768 is a deficient number, since it is larger than the sum of its proper divisors (125646232).

129041768 is a wasteful number, since it uses less digits than its factorization.

129041768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848984 (or 848980 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 129041768 is about 11359.6552764598. The cubic root of 129041768 is about 505.3319622417.

The spelling of 129041768 in words is "one hundred twenty-nine million, forty-one thousand, seven hundred sixty-eight".