120661560 has 48 divisors (see below), whose sum is σ = 392151240. Its totient is φ = 32176320.

The previous prime is 120661553. The next prime is 120661577. The reversal of 120661560 is 65166021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167226 + ... + 167945.

Almost surely, 2^120661560 is an apocalyptic number.

120661560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120661560 is an abundant number, since it is smaller than the sum of its proper divisors (271489680).

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

120661560 is a wasteful number, since it uses less digits than its factorization.

120661560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335188 (or 335181 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 120661560 is about 10984.6055914630. The cubic root of 120661560 is about 494.1471694045.

The spelling of 120661560 in words is "one hundred twenty million, six hundred sixty-one thousand, five hundred sixty".