129901472 has 24 divisors (see below), whose sum is σ = 256009572. Its totient is φ = 64883200.

The previous prime is 129901441. The next prime is 129901507. The reversal of 129901472 is 274109921.

It can be written as a sum of positive squares in 2 ways, for example, as 127328656 + 2572816 = 11284^2 + 1604^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46022 + ... + 48762.

Almost surely, 2^129901472 is an apocalyptic number.

It is an amenable number.

129901472 is a deficient number, since it is larger than the sum of its proper divisors (126108100).

129901472 is a wasteful number, since it uses less digits than its factorization.

129901472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4232 (or 4224 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 129901472 is about 11397.4326933744. The cubic root of 129901472 is about 506.4516893465.

The spelling of 129901472 in words is "one hundred twenty-nine million, nine hundred one thousand, four hundred seventy-two".