120565720 has 64 divisors (see below), whose sum is σ = 298974240. Its totient is φ = 43392000.

The previous prime is 120565699. The next prime is 120565741. The reversal of 120565720 is 27565021.

It is an interprime number because it is at equal distance from previous prime (120565699) and next prime (120565741).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43084 + ... + 45796.

Almost surely, 2^120565720 is an apocalyptic number.

120565720 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 120565720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149487120).

120565720 is an abundant number, since it is smaller than the sum of its proper divisors (178408520).

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

120565720 is a wasteful number, since it uses less digits than its factorization.

120565720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836 (or 2832 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 120565720 is about 10980.2422559796. The cubic root of 120565720 is about 494.0163030674.

The spelling of 120565720 in words is "one hundred twenty million, five hundred sixty-five thousand, seven hundred twenty".