243440220442 has 32 divisors (see below), whose sum is σ = 374514437952. Its totient is φ = 118643906304.

The previous prime is 243440220437. The next prime is 243440220487. The reversal of 243440220442 is 244022044342.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9268933 + ... + 9295159.

It is an arithmetic number, because the mean of its divisors is an integer number (11703576186).

Almost surely, 2^243440220442 is an apocalyptic number.

243440220442 is a deficient number, since it is larger than the sum of its proper divisors (131074217510).

243440220442 is a wasteful number, since it uses less digits than its factorization.

243440220442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27022.

The product of its (nonzero) digits is 49152, while the sum is 31.

Adding to 243440220442 its reverse (244022044342), we get a palindrome (487462264784).

The spelling of 243440220442 in words is "two hundred forty-three billion, four hundred forty million, two hundred twenty thousand, four hundred forty-two".