443243121 has 4 divisors (see below), whose sum is σ = 590990832. Its totient is φ = 295495412.

The previous prime is 443243111. The next prime is 443243137. The reversal of 443243121 is 121342344.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 443243121 - 2⁵ = 443243089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 443243091 and 443243100.

It is not an unprimeable number, because it can be changed into a prime (443243111) 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, 73873851 + ... + 73873856.

It is an arithmetic number, because the mean of its divisors is an integer number (147747708).

Almost surely, 2^443243121 is an apocalyptic number.

It is an amenable number.

443243121 is a deficient number, since it is larger than the sum of its proper divisors (147747711).

443243121 is a wasteful number, since it uses less digits than its factorization.

443243121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147747710.

The product of its digits is 2304, while the sum is 24.

The square root of 443243121 is about 21053.3399013078. The cubic root of 443243121 is about 762.4546218986.

Adding to 443243121 its reverse (121342344), we get a palindrome (564585465).

The spelling of 443243121 in words is "four hundred forty-three million, two hundred forty-three thousand, one hundred twenty-one".