129055268 has 12 divisors (see below), whose sum is σ = 227958192. Its totient is φ = 63924360.

The previous prime is 129055261. The next prime is 129055271. The reversal of 129055268 is 862550921.

It is not an unprimeable number, because it can be changed into a prime (129055261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150338 + ... + 151193.

It is an arithmetic number, because the mean of its divisors is an integer number (18996516).

Almost surely, 2^129055268 is an apocalyptic number.

It is an amenable number.

129055268 is a deficient number, since it is larger than the sum of its proper divisors (98902924).

129055268 is a wasteful number, since it uses less digits than its factorization.

129055268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301642 (or 301640 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 129055268 is about 11360.2494690918. The cubic root of 129055268 is about 505.3495837806.

The spelling of 129055268 in words is "one hundred twenty-nine million, fifty-five thousand, two hundred sixty-eight".