3124204021 has 2 divisors, whose sum is σ = 3124204022. Its totient is φ = 3124204020.

The previous prime is 3124204007. The next prime is 3124204063. The reversal of 3124204021 is 1204024213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2105892100 + 1018311921 = 45890^2 + 31911^2 .

It is a cyclic number.

It is not a de Polignac number, because 3124204021 - 2⁵ = 3124203989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3124204021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3124204921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562102010 + 1562102011.

It is an arithmetic number, because the mean of its divisors is an integer number (1562102011).

Almost surely, 2^3124204021 is an apocalyptic number.

It is an amenable number.

3124204021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3124204021 is an equidigital number, since it uses as much as digits as its factorization.

3124204021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 3124204021 is about 55894.5795314716. The cubic root of 3124204021 is about 1461.8847275409.

Adding to 3124204021 its reverse (1204024213), we get a palindrome (4328228234).

The spelling of 3124204021 in words is "three billion, one hundred twenty-four million, two hundred four thousand, twenty-one".