129198116 has 24 divisors (see below), whose sum is σ = 229211136. Its totient is φ = 63715680.

The previous prime is 129198077. The next prime is 129198131. The reversal of 129198116 is 611891921.

It is a self number, because there is not a number n which added to its sum of digits gives 129198116.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 99431 + ... + 100721.

It is an arithmetic number, because the mean of its divisors is an integer number (9550464).

Almost surely, 2^129198116 is an apocalyptic number.

It is an amenable number.

129198116 is a deficient number, since it is larger than the sum of its proper divisors (100013020).

129198116 is a wasteful number, since it uses less digits than its factorization.

129198116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619 (or 1617 counting only the distinct ones).

The product of its digits is 7776, while the sum is 38.

The square root of 129198116 is about 11366.5349161475. The cubic root of 129198116 is about 505.5359679047.

The spelling of 129198116 in words is "one hundred twenty-nine million, one hundred ninety-eight thousand, one hundred sixteen".