129845072 has 40 divisors (see below), whose sum is σ = 288273216. Its totient is φ = 55501056.

The previous prime is 129845063. The next prime is 129845077. The reversal of 129845072 is 270548921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129845077) 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, 48308 + ... + 50924.

Almost surely, 2^129845072 is an apocalyptic number.

It is an amenable number.

129845072 is an abundant number, since it is smaller than the sum of its proper divisors (158428144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129845072 is a wasteful number, since it uses less digits than its factorization.

129845072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075 (or 3069 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 129845072 is about 11394.9581833370. The cubic root of 129845072 is about 506.3783824784.

The spelling of 129845072 in words is "one hundred twenty-nine million, eight hundred forty-five thousand, seventy-two".