129410272 has 24 divisors (see below), whose sum is σ = 257644800. Its totient is φ = 63976704.

The previous prime is 129410231. The next prime is 129410279. The reversal of 129410272 is 272014921.

It is a super-2 number, since 2×129410272² = 33494036998227968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129410272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129410279) 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, 19872 + ... + 25567.

It is an arithmetic number, because the mean of its divisors is an integer number (10735200).

Almost surely, 2^129410272 is an apocalyptic number.

It is an amenable number.

129410272 is a deficient number, since it is larger than the sum of its proper divisors (128234528).

129410272 is an equidigital number, since it uses as much as digits as its factorization.

129410272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45538 (or 45530 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 129410272 is about 11375.8635716151. The cubic root of 129410272 is about 505.8125298218.

The spelling of 129410272 in words is "one hundred twenty-nine million, four hundred ten thousand, two hundred seventy-two".