242643208 has 16 divisors (see below), whose sum is σ = 459462060. Its totient is φ = 120120000.

The previous prime is 242643199. The next prime is 242643229. The reversal of 242643208 is 802346242.

It can be written as a sum of positive squares in 2 ways, for example, as 236482884 + 6160324 = 15378^2 + 2482^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 242643208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149343 + ... + 150958.

Almost surely, 2^242643208 is an apocalyptic number.

It is an amenable number.

242643208 is a deficient number, since it is larger than the sum of its proper divisors (216818852).

242643208 is a wasteful number, since it uses less digits than its factorization.

242643208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300408 (or 300404 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 242643208 is about 15577.0089555088. The cubic root of 242643208 is about 623.7195828022.

It can be divided in two parts, 24264 and 3208, that added together give a palindrome (27472).

The spelling of 242643208 in words is "two hundred forty-two million, six hundred forty-three thousand, two hundred eight".