3020400121 has 2 divisors, whose sum is σ = 3020400122. Its totient is φ = 3020400120.

The previous prime is 3020400079. The next prime is 3020400139. The reversal of 3020400121 is 1210040203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2855406096 + 164994025 = 53436^2 + 12845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3020400121 is a prime.

It is not a weakly prime, because it can be changed into another prime (3020400161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1510200060 + 1510200061.

It is an arithmetic number, because the mean of its divisors is an integer number (1510200061).

Almost surely, 2^3020400121 is an apocalyptic number.

It is an amenable number.

3020400121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3020400121 is an equidigital number, since it uses as much as digits as its factorization.

3020400121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3020400121 is about 54958.1670090988. The cubic root of 3020400121 is about 1445.5113065454.

Adding to 3020400121 its reverse (1210040203), we get a palindrome (4230440324).

The spelling of 3020400121 in words is "three billion, twenty million, four hundred thousand, one hundred twenty-one".