120404311020 has 144 divisors (see below), whose sum is σ = 417487150080. Its totient is φ = 27515346048.

The previous prime is 120404310977. The next prime is 120404311021. The reversal of 120404311020 is 20113404021.

120404311020 is a `hidden beast` number, since 1 + 204 + 0 + 431 + 10 + 20 = 666.

It is a super-2 number, since 2×120404311020² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 120404310984 and 120404311002.

It is not an unprimeable number, because it can be changed into a prime (120404311021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11635969 + ... + 11646311.

It is an arithmetic number, because the mean of its divisors is an integer number (2899216320).

Almost surely, 2^120404311020 is an apocalyptic number.

120404311020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120404311020 is an abundant number, since it is smaller than the sum of its proper divisors (297082839060).

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

120404311020 is a wasteful number, since it uses less digits than its factorization.

120404311020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19604 (or 19599 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 120404311020 its reverse (20113404021), we get a palindrome (140517715041).

The spelling of 120404311020 in words is "one hundred twenty billion, four hundred four million, three hundred eleven thousand, twenty".