12020413 has 6 divisors (see below), whose sum is σ = 12450074. Its totient is φ = 11605104.

The previous prime is 12020389. The next prime is 12020417. The reversal of 12020413 is 31402021.

It can be written as a sum of positive squares in 3 ways, for example, as 34969 + 11985444 = 187^2 + 3462^2 .

It is not a de Polignac number, because 12020413 - 2⁵ = 12020381 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020393 and 12020402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6306 + ... + 7987.

Almost surely, 2^12020413 is an apocalyptic number.

It is an amenable number.

12020413 is a deficient number, since it is larger than the sum of its proper divisors (429661).

12020413 is an equidigital number, since it uses as much as digits as its factorization.

12020413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14351 (or 14322 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12020413 is about 3467.0467259614. The cubic root of 12020413 is about 229.0725919250.

Adding to 12020413 its reverse (31402021), we get a palindrome (43422434).

The spelling of 12020413 in words is "twelve million, twenty thousand, four hundred thirteen".