120725731 has 8 divisors (see below), whose sum is σ = 138370400. Its totient is φ = 103180608.

The previous prime is 120725719. The next prime is 120725743. The reversal of 120725731 is 137527021.

It is an interprime number because it is at equal distance from previous prime (120725719) and next prime (120725743).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120725731 - 2⁹ = 120725219 is a prime.

It is a super-2 number, since 2×120725731² = 29149404250968722, 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 120725731.

It is not an unprimeable number, because it can be changed into a prime (120725711) 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, 22266 + ... + 27151.

It is an arithmetic number, because the mean of its divisors is an integer number (17296300).

Almost surely, 2^120725731 is an apocalyptic number.

120725731 is a deficient number, since it is larger than the sum of its proper divisors (17644669).

120725731 is an equidigital number, since it uses as much as digits as its factorization.

120725731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49773.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 120725731 is about 10987.5261546901. The cubic root of 120725731 is about 494.2347540456.

The spelling of 120725731 in words is "one hundred twenty million, seven hundred twenty-five thousand, seven hundred thirty-one".