243342443 has 4 divisors (see below), whose sum is σ = 256149960. Its totient is φ = 230534928.

The previous prime is 243342433. The next prime is 243342457. The reversal of 243342443 is 344243342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243342443 - 2¹⁶ = 243276907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243342433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6403730 + ... + 6403767.

It is an arithmetic number, because the mean of its divisors is an integer number (64037490).

Almost surely, 2^243342443 is an apocalyptic number.

243342443 is a deficient number, since it is larger than the sum of its proper divisors (12807517).

243342443 is a wasteful number, since it uses less digits than its factorization.

243342443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12807516.

The product of its digits is 27648, while the sum is 29.

The square root of 243342443 is about 15599.4372654913. The cubic root of 243342443 is about 624.3181410733.

Adding to 243342443 its reverse (344243342), we get a palindrome (587585785).

The spelling of 243342443 in words is "two hundred forty-three million, three hundred forty-two thousand, four hundred forty-three".