120040403020 has 24 divisors (see below), whose sum is σ = 252091375200. Its totient is φ = 48014917632.

The previous prime is 120040402981. The next prime is 120040403023. The reversal of 120040403020 is 20304040021.

It is a junction number, because it is equal to n+sod(n) for n = 120040402985 and 120040403003.

It is not an unprimeable number, because it can be changed into a prime (120040403023) 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, 1387596 + ... + 1471564.

It is an arithmetic number, because the mean of its divisors is an integer number (10503807300).

Almost surely, 2^120040403020 is an apocalyptic number.

120040403020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120040403020 is an abundant number, since it is smaller than the sum of its proper divisors (132050972180).

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

120040403020 is a wasteful number, since it uses less digits than its factorization.

120040403020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155457 (or 155455 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 120040403020 its reverse (20304040021), we get a palindrome (140344443041).

The spelling of 120040403020 in words is "one hundred twenty billion, forty million, four hundred three thousand, twenty".