129198050 has 24 divisors (see below), whose sum is σ = 242651136. Its totient is φ = 51175440.

The previous prime is 129198031. The next prime is 129198071. The reversal of 129198050 is 50891921.

It is a super-2 number, since 2×129198050² = 33384272247605000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129198050.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7394 + ... + 17693.

It is an arithmetic number, because the mean of its divisors is an integer number (10110464).

Almost surely, 2^129198050 is an apocalyptic number.

129198050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129198050 is a deficient number, since it is larger than the sum of its proper divisors (113453086).

129198050 is a wasteful number, since it uses less digits than its factorization.

129198050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25202 (or 25197 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 129198050 is about 11366.5320128877. The cubic root of 129198050 is about 505.5358818215.

The spelling of 129198050 in words is "one hundred twenty-nine million, one hundred ninety-eight thousand, fifty".