4052020321 has 2 divisors, whose sum is σ = 4052020322. Its totient is φ = 4052020320.

The previous prime is 4052020279. The next prime is 4052020327. The reversal of 4052020321 is 1230202504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2268140625 + 1783879696 = 47625^2 + 42236^2 .

It is a cyclic number.

It is not a de Polignac number, because 4052020321 - 2¹¹ = 4052018273 is a prime.

It is not a weakly prime, because it can be changed into another prime (4052020327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2026010160 + 2026010161.

It is an arithmetic number, because the mean of its divisors is an integer number (2026010161).

Almost surely, 2^4052020321 is an apocalyptic number.

It is an amenable number.

4052020321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4052020321 is an equidigital number, since it uses as much as digits as its factorization.

4052020321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 4052020321 is about 63655.4814686057. The cubic root of 4052020321 is about 1594.2528605060.

Adding to 4052020321 its reverse (1230202504), we get a palindrome (5282222825).

The spelling of 4052020321 in words is "four billion, fifty-two million, twenty thousand, three hundred twenty-one".