242543621808 has 40 divisors (see below), whose sum is σ = 696190026800. Its totient is φ = 80847873792.

The previous prime is 242543621797. The next prime is 242543621809. The reversal of 242543621808 is 808126345242.

242543621808 is a `hidden beast` number, since 2 + 4 + 2 + 543 + 6 + 21 + 80 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (242543621809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280721353 + ... + 280722216.

It is an arithmetic number, because the mean of its divisors is an integer number (17404750670).

Almost surely, 2^242543621808 is an apocalyptic number.

It is an amenable number.

242543621808 is an abundant number, since it is smaller than the sum of its proper divisors (453646404992).

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

242543621808 is a wasteful number, since it uses less digits than its factorization.

242543621808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561443586 (or 561443574 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 242543621808 in words is "two hundred forty-two billion, five hundred forty-three million, six hundred twenty-one thousand, eight hundred eight".