243404242 has 8 divisors (see below), whose sum is σ = 368518896. Its totient is φ = 120564612.

The previous prime is 243404207. The next prime is 243404251. The reversal of 243404242 is 242404342.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568488 + ... + 568915.

It is an arithmetic number, because the mean of its divisors is an integer number (46064862).

Almost surely, 2^243404242 is an apocalyptic number.

243404242 is a deficient number, since it is larger than the sum of its proper divisors (125114654).

243404242 is a wasteful number, since it uses less digits than its factorization.

243404242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137512.

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 243404242 is about 15601.4179483789. The cubic root of 243404242 is about 624.3709870006.

Adding to 243404242 its reverse (242404342), we get a palindrome (485808584).

It can be divided in two parts, 24340 and 4242, that added together give a palindrome (28582).

The spelling of 243404242 in words is "two hundred forty-three million, four hundred four thousand, two hundred forty-two".