243203122242 has 48 divisors (see below), whose sum is σ = 548633790432. Its totient is φ = 80744688000.

The previous prime is 243203122223. The next prime is 243203122271. The reversal of 243203122242 is 242221302342.

243203122242 is a `hidden beast` number, since 2 + 4 + 320 + 312 + 2 + 24 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 874863 + ... + 1118834.

It is an arithmetic number, because the mean of its divisors is an integer number (11429870634).

Almost surely, 2^243203122242 is an apocalyptic number.

243203122242 is an abundant number, since it is smaller than the sum of its proper divisors (305430668190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243203122242 is a wasteful number, since it uses less digits than its factorization.

243203122242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993965 (or 1993953 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 243203122242 its reverse (242221302342), we get a palindrome (485424424584).

The spelling of 243203122242 in words is "two hundred forty-three billion, two hundred three million, one hundred twenty-two thousand, two hundred forty-two".