120520032320 has 56 divisors (see below), whose sum is σ = 289947044184. Its totient is φ = 47711010816.

The previous prime is 120520032319. The next prime is 120520032337. The reversal of 120520032320 is 23230025021.

It can be written as a sum of positive squares in 4 ways, for example, as 11075584 + 120508956736 = 3328^2 + 347144^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 120520032292 and 120520032301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1910327 + ... + 1972406.

It is an arithmetic number, because the mean of its divisors is an integer number (5177625789).

Almost surely, 2^120520032320 is an apocalyptic number.

120520032320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120520032320 is an abundant number, since it is smaller than the sum of its proper divisors (169427011864).

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

120520032320 is an equidigital number, since it uses as much as digits as its factorization.

120520032320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3882847 (or 3882837 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 120520032320 its reverse (23230025021), we get a palindrome (143750057341).

The spelling of 120520032320 in words is "one hundred twenty billion, five hundred twenty million, thirty-two thousand, three hundred twenty".