243242226 has 24 divisors (see below), whose sum is σ = 527314320. Its totient is φ = 81036216.

The previous prime is 243242203. The next prime is 243242231. The reversal of 243242226 is 622242342.

It is a happy number.

243242226 is a `hidden beast` number, since 2 + 432 + 4 + 2 + 226 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 243242226.

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, 55545 + ... + 59763.

It is an arithmetic number, because the mean of its divisors is an integer number (21971430).

Almost surely, 2^243242226 is an apocalyptic number.

243242226 is an abundant number, since it is smaller than the sum of its proper divisors (284072094).

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

243242226 is a wasteful number, since it uses less digits than its factorization.

243242226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7430 (or 7427 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 243242226 is about 15596.2247354929. The cubic root of 243242226 is about 624.2324238957.

Adding to 243242226 its reverse (622242342), we get a palindrome (865484568).

The spelling of 243242226 in words is "two hundred forty-three million, two hundred forty-two thousand, two hundred twenty-six".