2443442321 has 4 divisors (see below), whose sum is σ = 2449246644. Its totient is φ = 2437638000.

The previous prime is 2443442257. The next prime is 2443442333. The reversal of 2443442321 is 1232443442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1232443442 = 2 ⋅616221721.

It can be written as a sum of positive squares in 2 ways, for example, as 459630721 + 1983811600 = 21439^2 + 44540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2443442321 - 2⁶ = 2443442257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2443442381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2901530 + ... + 2902371.

It is an arithmetic number, because the mean of its divisors is an integer number (612311661).

Almost surely, 2^2443442321 is an apocalyptic number.

It is an amenable number.

2443442321 is a deficient number, since it is larger than the sum of its proper divisors (5804323).

2443442321 is an equidigital number, since it uses as much as digits as its factorization.

2443442321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5804322.

The product of its digits is 18432, while the sum is 29.

The square root of 2443442321 is about 49431.1877360842. The cubic root of 2443442321 is about 1346.8958989233.

Adding to 2443442321 its reverse (1232443442), we get a palindrome (3675885763).

The spelling of 2443442321 in words is "two billion, four hundred forty-three million, four hundred forty-two thousand, three hundred twenty-one".