243042042 has 8 divisors (see below), whose sum is σ = 486084096. Its totient is φ = 81014012.

The previous prime is 243041983. The next prime is 243042089. The reversal of 243042042 is 240240342.

243042042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

243042042 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20253498 + ... + 20253509.

It is an arithmetic number, because the mean of its divisors is an integer number (60760512).

Almost surely, 2^243042042 is an apocalyptic number.

243042042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

243042042 is a wasteful number, since it uses less digits than its factorization.

243042042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40507012.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 243042042 is about 15589.8057075770. The cubic root of 243042042 is about 624.0611328585.

Adding to 243042042 its reverse (240240342), we get a palindrome (483282384).

The spelling of 243042042 in words is "two hundred forty-three million, forty-two thousand, forty-two".