120402020 has 24 divisors (see below), whose sum is σ = 253149624. Its totient is φ = 48102656.

The previous prime is 120402001. The next prime is 120402043. The reversal of 120402020 is 20204021.

It can be written as a sum of positive squares in 4 ways, for example, as 10445824 + 109956196 = 3232^2 + 10486^2 .

It is a junction number, because it is equal to n+sod(n) for n = 120401992 and 120402010.

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, 15902 + ... + 22218.

It is an arithmetic number, because the mean of its divisors is an integer number (10547901).

Almost surely, 2^120402020 is an apocalyptic number.

120402020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120402020 is an abundant number, since it is smaller than the sum of its proper divisors (132747604).

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

120402020 is a wasteful number, since it uses less digits than its factorization.

120402020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7279 (or 7277 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 120402020 is about 10972.7854257704. The cubic root of 120402020 is about 493.7926156669.

Adding to 120402020 its reverse (20204021), we get a palindrome (140606041).

The spelling of 120402020 in words is "one hundred twenty million, four hundred two thousand, twenty".