129060720 has 120 divisors (see below), whose sum is σ = 439108800. Its totient is φ = 33965568.

The previous prime is 129060707. The next prime is 129060721. The reversal of 129060720 is 27060921.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129060721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55746 + ... + 58014.

It is an arithmetic number, because the mean of its divisors is an integer number (3659240).

Almost surely, 2^129060720 is an apocalyptic number.

129060720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129060720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219554400).

129060720 is an abundant number, since it is smaller than the sum of its proper divisors (310048080).

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

129060720 is a wasteful number, since it uses less digits than its factorization.

129060720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2367 (or 2358 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 129060720 is about 11360.4894260767. The cubic root of 129060720 is about 505.3566999233.

The spelling of 129060720 in words is "one hundred twenty-nine million, sixty thousand, seven hundred twenty".