129155008 has 28 divisors (see below), whose sum is σ = 269783560. Its totient is φ = 61178112.

The previous prime is 129155003. The next prime is 129155023. The reversal of 129155008 is 800551921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129155003) 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, 51891 + ... + 54322.

Almost surely, 2^129155008 is an apocalyptic number.

It is an amenable number.

129155008 is an abundant number, since it is smaller than the sum of its proper divisors (140628552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129155008 is a wasteful number, since it uses less digits than its factorization.

129155008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106244 (or 106234 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 129155008 is about 11364.6384896309. The cubic root of 129155008 is about 505.4797362573.

The spelling of 129155008 in words is "one hundred twenty-nine million, one hundred fifty-five thousand, eight".