243420242 has 16 divisors (see below), whose sum is σ = 397958400. Its totient is φ = 110993232.

The previous prime is 243420227. The next prime is 243420283. The reversal of 243420242 is 242024342.

243420242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 54242 + ... + 58557.

It is an arithmetic number, because the mean of its divisors is an integer number (24872400).

Almost surely, 2^243420242 is an apocalyptic number.

243420242 is a deficient number, since it is larger than the sum of its proper divisors (154538158).

243420242 is a wasteful number, since it uses less digits than its factorization.

243420242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112897.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 243420242 is about 15601.9307138572. The cubic root of 243420242 is about 624.3846675577.

Adding to 243420242 its reverse (242024342), we get a palindrome (485444584).

The spelling of 243420242 in words is "two hundred forty-three million, four hundred twenty thousand, two hundred forty-two".