129025430 has 8 divisors (see below), whose sum is σ = 232245792. Its totient is φ = 51610168.

The previous prime is 129025363. The next prime is 129025439. The reversal of 129025430 is 34520921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 129025430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129025439) 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, 6451262 + ... + 6451281.

It is an arithmetic number, because the mean of its divisors is an integer number (29030724).

Almost surely, 2^129025430 is an apocalyptic number.

129025430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129025430 is a deficient number, since it is larger than the sum of its proper divisors (103220362).

129025430 is a wasteful number, since it uses less digits than its factorization.

129025430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12902550.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 129025430 is about 11358.9361297614. The cubic root of 129025430 is about 505.3106346199.

The spelling of 129025430 in words is "one hundred twenty-nine million, twenty-five thousand, four hundred thirty".