125002129 has 8 divisors (see below), whose sum is σ = 143171840. Its totient is φ = 106910496.

The previous prime is 125002123. The next prime is 125002183. The reversal of 125002129 is 921200521.

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

It is a de Polignac number, because none of the positive numbers 2^k-125002129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125002123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16044 + ... + 22525.

It is an arithmetic number, because the mean of its divisors is an integer number (17896480).

Almost surely, 2^125002129 is an apocalyptic number.

It is an amenable number.

125002129 is a deficient number, since it is larger than the sum of its proper divisors (18169711).

125002129 is an equidigital number, since it uses as much as digits as its factorization.

125002129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39039.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 125002129 is about 11180.4350988680. The cubic root of 125002129 is about 500.0028386506.

The spelling of 125002129 in words is "one hundred twenty-five million, two thousand, one hundred twenty-nine".