129030566 has 32 divisors (see below), whose sum is σ = 225566208. Its totient is φ = 54216000.

The previous prime is 129030547. The next prime is 129030569. The reversal of 129030566 is 665030921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129030569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256271 + ... + 256773.

It is an arithmetic number, because the mean of its divisors is an integer number (7048944).

Almost surely, 2^129030566 is an apocalyptic number.

129030566 is a deficient number, since it is larger than the sum of its proper divisors (96535642).

129030566 is a wasteful number, since it uses less digits than its factorization.

129030566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 129030566 is about 11359.1622050220. The cubic root of 129030566 is about 505.3173393472.

The spelling of 129030566 in words is "one hundred twenty-nine million, thirty thousand, five hundred sixty-six".