129152401 has 8 divisors (see below), whose sum is σ = 147809984. Its totient is φ = 110546640.

The previous prime is 129152371. The next prime is 129152407. The reversal of 129152401 is 104251921.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 129152401 - 2⁷ = 129152273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129152407) 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, 7455 + ... + 17716.

It is an arithmetic number, because the mean of its divisors is an integer number (18476248).

Almost surely, 2^129152401 is an apocalyptic number.

It is an amenable number.

129152401 is a deficient number, since it is larger than the sum of its proper divisors (18657583).

129152401 is an equidigital number, since it uses as much as digits as its factorization.

129152401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25911.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 129152401 is about 11364.5237911670. The cubic root of 129152401 is about 505.4763351902.

The spelling of 129152401 in words is "one hundred twenty-nine million, one hundred fifty-two thousand, four hundred one".