120640220 has 24 divisors (see below), whose sum is σ = 261518208. Its totient is φ = 46699200.

The previous prime is 120640217. The next prime is 120640229. The reversal of 120640220 is 22046021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120640229) 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, 96671 + ... + 97910.

It is an arithmetic number, because the mean of its divisors is an integer number (10896592).

Almost surely, 2^120640220 is an apocalyptic number.

120640220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120640220 is an abundant number, since it is smaller than the sum of its proper divisors (140877988).

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

120640220 is a wasteful number, since it uses less digits than its factorization.

120640220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194621 (or 194619 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 120640220 is about 10983.6341891015. The cubic root of 120640220 is about 494.1180363420.

Adding to 120640220 its reverse (22046021), we get a palindrome (142686241).

The spelling of 120640220 in words is "one hundred twenty million, six hundred forty thousand, two hundred twenty".