243442443 has 16 divisors (see below), whose sum is σ = 336510720. Its totient is φ = 156358944.

The previous prime is 243442429. The next prime is 243442447. The reversal of 243442443 is 344244342.

It is not a de Polignac number, because 243442443 - 2⁹ = 243441931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243442443.

It is not an unprimeable number, because it can be changed into a prime (243442447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40980 + ... + 46542.

It is an arithmetic number, because the mean of its divisors is an integer number (21031920).

Almost surely, 2^243442443 is an apocalyptic number.

243442443 is a deficient number, since it is larger than the sum of its proper divisors (93068277).

243442443 is a wasteful number, since it uses less digits than its factorization.

243442443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6098.

The product of its digits is 36864, while the sum is 30.

The square root of 243442443 is about 15602.6421800924. The cubic root of 243442443 is about 624.4036491928.

Adding to 243442443 its reverse (344244342), we get a palindrome (587686785).

The spelling of 243442443 in words is "two hundred forty-three million, four hundred forty-two thousand, four hundred forty-three".