129668330 has 16 divisors (see below), whose sum is σ = 254621664. Its totient is φ = 47152080.

The previous prime is 129668323. The next prime is 129668353. The reversal of 129668330 is 33866921.

129668330 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 589292 + ... + 589511.

It is an arithmetic number, because the mean of its divisors is an integer number (15913854).

Almost surely, 2^129668330 is an apocalyptic number.

129668330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129668330 is a deficient number, since it is larger than the sum of its proper divisors (124953334).

129668330 is a wasteful number, since it uses less digits than its factorization.

129668330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178821.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 129668330 is about 11387.2002704791. The cubic root of 129668330 is about 506.1485214472.

The spelling of 129668330 in words is "one hundred twenty-nine million, six hundred sixty-eight thousand, three hundred thirty".