243243405242 has 8 divisors (see below), whose sum is σ = 364868738976. Its totient is φ = 121620492252.

The previous prime is 243243405199. The next prime is 243243405263. The reversal of 243243405242 is 242504342342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328718 + ... + 771065.

It is an arithmetic number, because the mean of its divisors is an integer number (45608592372).

Almost surely, 2^243243405242 is an apocalyptic number.

243243405242 is a deficient number, since it is larger than the sum of its proper divisors (121625333734).

243243405242 is a wasteful number, since it uses less digits than its factorization.

243243405242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210372.

The product of its (nonzero) digits is 184320, while the sum is 35.

Adding to 243243405242 its reverse (242504342342), we get a palindrome (485747747584).

The spelling of 243243405242 in words is "two hundred forty-three billion, two hundred forty-three million, four hundred five thousand, two hundred forty-two".