2042443321 has 2 divisors, whose sum is σ = 2042443322. Its totient is φ = 2042443320.

The previous prime is 2042443267. The next prime is 2042443367. The reversal of 2042443321 is 1233442402.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1683871225 + 358572096 = 41035^2 + 18936^2 .

It is a cyclic number.

It is not a de Polignac number, because 2042443321 - 2¹⁵ = 2042410553 is a prime.

It is not a weakly prime, because it can be changed into another prime (2042443721) 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, 1021221660 + 1021221661.

It is an arithmetic number, because the mean of its divisors is an integer number (1021221661).

Almost surely, 2^2042443321 is an apocalyptic number.

It is an amenable number.

2042443321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042443321 is an equidigital number, since it uses as much as digits as its factorization.

2042443321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 2042443321 is about 45193.3990865923. The cubic root of 2042443321 is about 1268.7712754778.

Adding to 2042443321 its reverse (1233442402), we get a palindrome (3275885723).

The spelling of 2042443321 in words is "two billion, forty-two million, four hundred forty-three thousand, three hundred twenty-one".