120845020 has 24 divisors (see below), whose sum is σ = 255097584. Its totient is φ = 48086016.

The previous prime is 120845017. The next prime is 120845057. The reversal of 120845020 is 20548021.

It is a junction number, because it is equal to n+sod(n) for n = 120844982 and 120845000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11794 + ... + 19513.

It is an arithmetic number, because the mean of its divisors is an integer number (10629066).

Almost surely, 2^120845020 is an apocalyptic number.

120845020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120845020 is an abundant number, since it is smaller than the sum of its proper divisors (134252564).

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

120845020 is a wasteful number, since it uses less digits than its factorization.

120845020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31509 (or 31507 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 120845020 is about 10992.9531973897. The cubic root of 120845020 is about 494.3974847835.

The spelling of 120845020 in words is "one hundred twenty million, eight hundred forty-five thousand, twenty".