120861680 has 40 divisors (see below), whose sum is σ = 281900112. Its totient is φ = 48190464.

The previous prime is 120861661. The next prime is 120861683. The reversal of 120861680 is 86168021.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120861683) 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, 24719 + ... + 29201.

Almost surely, 2^120861680 is an apocalyptic number.

120861680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120861680 is an abundant number, since it is smaller than the sum of its proper divisors (161038432).

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

120861680 is a wasteful number, since it uses less digits than its factorization.

120861680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4833 (or 4827 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 120861680 is about 10993.7109294360. The cubic root of 120861680 is about 494.4202033686.

The spelling of 120861680 in words is "one hundred twenty million, eight hundred sixty-one thousand, six hundred eighty".