12020420 has 12 divisors (see below), whose sum is σ = 25242924. Its totient is φ = 4808160.

The previous prime is 12020417. The next prime is 12020431. The reversal of 12020420 is 2402021.

It can be written as a sum of positive squares in 2 ways, for example, as 5750404 + 6270016 = 2398^2 + 2504^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300491 + ... + 300530.

It is an arithmetic number, because the mean of its divisors is an integer number (2103577).

Almost surely, 2^12020420 is an apocalyptic number.

12020420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020420 is an abundant number, since it is smaller than the sum of its proper divisors (13222504).

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

12020420 is a wasteful number, since it uses less digits than its factorization.

12020420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601030 (or 601028 counting only the distinct ones).

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

The square root of 12020420 is about 3467.0477354660. The cubic root of 12020420 is about 229.0726363912.

Adding to 12020420 its reverse (2402021), we get a palindrome (14422441).

The spelling of 12020420 in words is "twelve million, twenty thousand, four hundred twenty".