243611242 has 24 divisors (see below), whose sum is σ = 426703140. Its totient is φ = 104005440.

The previous prime is 243611233. The next prime is 243611279. The reversal of 243611242 is 242116342.

It is a happy number.

243611242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 242144721 + 1466521 = 15561^2 + 1211^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21742 + ... + 30982.

Almost surely, 2^243611242 is an apocalyptic number.

243611242 is a deficient number, since it is larger than the sum of its proper divisors (183091898).

243611242 is a wasteful number, since it uses less digits than its factorization.

243611242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9526 (or 9519 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 243611242 is about 15608.0505509176. The cubic root of 243611242 is about 624.5479329354.

Adding to 243611242 its reverse (242116342), we get a palindrome (485727584).

The spelling of 243611242 in words is "two hundred forty-three million, six hundred eleven thousand, two hundred forty-two".