4045311421 has 2 divisors, whose sum is σ = 4045311422. Its totient is φ = 4045311420.

The previous prime is 4045311397. The next prime is 4045311463. The reversal of 4045311421 is 1241135404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3879545796 + 165765625 = 62286^2 + 12875^2 .

It is a cyclic number.

It is not a de Polignac number, because 4045311421 - 2⁷ = 4045311293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4045311481) 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, 2022655710 + 2022655711.

It is an arithmetic number, because the mean of its divisors is an integer number (2022655711).

Almost surely, 2^4045311421 is an apocalyptic number.

It is an amenable number.

4045311421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4045311421 is an equidigital number, since it uses as much as digits as its factorization.

4045311421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 4045311421 is about 63602.7626837074. The cubic root of 4045311421 is about 1593.3725102507.

Adding to 4045311421 its reverse (1241135404), we get a palindrome (5286446825).

The spelling of 4045311421 in words is "four billion, forty-five million, three hundred eleven thousand, four hundred twenty-one".