243042224 has 20 divisors (see below), whose sum is σ = 495678840. Its totient is φ = 115125120.

The previous prime is 243042203. The next prime is 243042227. The reversal of 243042224 is 422240342.

It is a self number, because there is not a number n which added to its sum of digits gives 243042224.

It is not an unprimeable number, because it can be changed into a prime (243042227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399437 + ... + 400044.

It is an arithmetic number, because the mean of its divisors is an integer number (24783942).

Almost surely, 2^243042224 is an apocalyptic number.

It is an amenable number.

243042224 is an abundant number, since it is smaller than the sum of its proper divisors (252636616).

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

243042224 is a wasteful number, since it uses less digits than its factorization.

243042224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799508 (or 799502 counting only the distinct ones).

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

The square root of 243042224 is about 15589.8115447237. The cubic root of 243042224 is about 624.0612886327.

Adding to 243042224 its reverse (422240342), we get a palindrome (665282566).

The spelling of 243042224 in words is "two hundred forty-three million, forty-two thousand, two hundred twenty-four".