129750960 has 40 divisors (see below), whose sum is σ = 402228720. Its totient is φ = 34600192.

The previous prime is 129750941. The next prime is 129750961. The reversal of 129750960 is 69057921.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (129750961) 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, 270075 + ... + 270554.

It is an arithmetic number, because the mean of its divisors is an integer number (10055718).

Almost surely, 2^129750960 is an apocalyptic number.

129750960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129750960 is an abundant number, since it is smaller than the sum of its proper divisors (272477760).

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

129750960 is a wasteful number, since it uses less digits than its factorization.

129750960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540645 (or 540639 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 129750960 is about 11390.8278891396. The cubic root of 129750960 is about 506.2560115122.

The spelling of 129750960 in words is "one hundred twenty-nine million, seven hundred fifty thousand, nine hundred sixty".