6004021 has 2 divisors, whose sum is σ = 6004022. Its totient is φ = 6004020.

The previous prime is 6004013. The next prime is 6004067. The reversal of 6004021 is 1204006.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6002500 + 1521 = 2450^2 + 39^2 .

It is a cyclic number.

It is not a de Polignac number, because 6004021 - 2³ = 6004013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6003992 and 6004010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6004001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3002010 + 3002011.

It is an arithmetic number, because the mean of its divisors is an integer number (3002011).

Almost surely, 2^6004021 is an apocalyptic number.

It is an amenable number.

6004021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6004021 is an equidigital number, since it uses as much as digits as its factorization.

6004021 is an evil number, because the sum of its binary digits is even.

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

The square root of 6004021 is about 2450.3103885018. The cubic root of 6004021 is about 181.7526426737.

Adding to 6004021 its reverse (1204006), we get a palindrome (7208027).

The spelling of 6004021 in words is "six million, four thousand, twenty-one".