243044020242 has 12 divisors (see below), whose sum is σ = 526595377230. Its totient is φ = 81014673408.

The previous prime is 243044020237. The next prime is 243044020301. The reversal of 243044020242 is 242020440342.

It can be written as a sum of positive squares in only one way, i.e., 237957620481 + 5086399761 = 487809^2 + 71319^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6751222767 + ... + 6751222802.

Almost surely, 2^243044020242 is an apocalyptic number.

243044020242 is an abundant number, since it is smaller than the sum of its proper divisors (283551356988).

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

243044020242 is a wasteful number, since it uses less digits than its factorization.

243044020242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13502445577 (or 13502445574 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 243044020242 its reverse (242020440342), we get a palindrome (485064460584).

The spelling of 243044020242 in words is "two hundred forty-three billion, forty-four million, twenty thousand, two hundred forty-two".