120661530 has 32 divisors (see below), whose sum is σ = 315914688. Its totient is φ = 29251200.

The previous prime is 120661523. The next prime is 120661531. The reversal of 120661530 is 35166021.

It is a self number, because there is not a number n which added to its sum of digits gives 120661530.

It is not an unprimeable number, because it can be changed into a prime (120661531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182491 + ... + 183150.

It is an arithmetic number, because the mean of its divisors is an integer number (9872334).

Almost surely, 2^120661530 is an apocalyptic number.

120661530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120661530 is an abundant number, since it is smaller than the sum of its proper divisors (195253158).

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

120661530 is a wasteful number, since it uses less digits than its factorization.

120661530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365662.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 120661530 is about 10984.6042259155. The cubic root of 120661530 is about 494.1471284514.

The spelling of 120661530 in words is "one hundred twenty million, six hundred sixty-one thousand, five hundred thirty".