120401020 has 12 divisors (see below), whose sum is σ = 252842184. Its totient is φ = 48160400.

The previous prime is 120401009. The next prime is 120401033. The reversal of 120401020 is 20104021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 120400988 and 120401006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3010006 + ... + 3010045.

It is an arithmetic number, because the mean of its divisors is an integer number (21070182).

Almost surely, 2^120401020 is an apocalyptic number.

120401020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120401020 is an abundant number, since it is smaller than the sum of its proper divisors (132441164).

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

120401020 is a wasteful number, since it uses less digits than its factorization.

120401020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6020060 (or 6020058 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 120401020 is about 10972.7398583945. The cubic root of 120401020 is about 493.7912485969.

Adding to 120401020 its reverse (20104021), we get a palindrome (140505041).

The spelling of 120401020 in words is "one hundred twenty million, four hundred one thousand, twenty".