129175050 has 24 divisors (see below), whose sum is σ = 320354496. Its totient is φ = 34446640.

The previous prime is 129175049. The next prime is 129175073. The reversal of 129175050 is 50571921.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 129174999 and 129175017.

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 11 ways as a sum of consecutive naturals, for example, 430434 + ... + 430733.

It is an arithmetic number, because the mean of its divisors is an integer number (13348104).

Almost surely, 2^129175050 is an apocalyptic number.

129175050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129175050 is an abundant number, since it is smaller than the sum of its proper divisors (191179446).

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

129175050 is a wasteful number, since it uses less digits than its factorization.

129175050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861182 (or 861177 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 129175050 is about 11365.5202256650. The cubic root of 129175050 is about 505.5058813292.

The spelling of 129175050 in words is "one hundred twenty-nine million, one hundred seventy-five thousand, fifty".