129253401 has 24 divisors (see below), whose sum is σ = 196094080. Its totient is φ = 85065552.

The previous prime is 129253381. The next prime is 129253417. The reversal of 129253401 is 104352921.

129253401 is a `hidden beast` number, since 1 + 2 + 9 + 253 + 401 = 666.

It is not a de Polignac number, because 129253401 - 2²⁵ = 95698969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129253001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15831 + ... + 22563.

Almost surely, 2^129253401 is an apocalyptic number.

It is an amenable number.

129253401 is a deficient number, since it is larger than the sum of its proper divisors (66840679).

129253401 is an frugal number, since it uses more digits than its factorization.

129253401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6827 (or 6815 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 129253401 is about 11368.9665757271. The cubic root of 129253401 is about 505.6080653711.

The spelling of 129253401 in words is "one hundred twenty-nine million, two hundred fifty-three thousand, four hundred one".