120020444520 has 64 divisors (see below), whose sum is σ = 360111795840. Its totient is φ = 32000966400.

The previous prime is 120020444497. The next prime is 120020444521. The reversal of 120020444520 is 25444020021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (120020444521) 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, 838605 + ... + 971235.

It is an arithmetic number, because the mean of its divisors is an integer number (5626746810).

Almost surely, 2^120020444520 is an apocalyptic number.

120020444520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120020444520 is an abundant number, since it is smaller than the sum of its proper divisors (240091351320).

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

120020444520 is a wasteful number, since it uses less digits than its factorization.

120020444520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140186 (or 140182 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 120020444520 its reverse (25444020021), we get a palindrome (145464464541).

The spelling of 120020444520 in words is "one hundred twenty billion, twenty million, four hundred forty-four thousand, five hundred twenty".