129888112 has 20 divisors (see below), whose sum is σ = 251954856. Its totient is φ = 64867520.

The previous prime is 129888103. The next prime is 129888127. The reversal of 129888112 is 211888921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10743 + ... + 19369.

Almost surely, 2^129888112 is an apocalyptic number.

It is an amenable number.

129888112 is a deficient number, since it is larger than the sum of its proper divisors (122066744).

129888112 is an equidigital number, since it uses as much as digits as its factorization.

129888112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9576 (or 9570 counting only the distinct ones).

The product of its digits is 18432, while the sum is 40.

The square root of 129888112 is about 11396.8465814014. The cubic root of 129888112 is about 506.4343263753.

The spelling of 129888112 in words is "one hundred twenty-nine million, eight hundred eighty-eight thousand, one hundred twelve".