243040424 has 32 divisors (see below), whose sum is σ = 499024800. Its totient is φ = 110051520.

The previous prime is 243040393. The next prime is 243040439. The reversal of 243040424 is 424040342.

It is a self number, because there is not a number n which added to its sum of digits gives 243040424.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18539 + ... + 28805.

It is an arithmetic number, because the mean of its divisors is an integer number (15594525).

Almost surely, 2^243040424 is an apocalyptic number.

It is an amenable number.

243040424 is an abundant number, since it is smaller than the sum of its proper divisors (255984376).

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

243040424 is a wasteful number, since it uses less digits than its factorization.

243040424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10553 (or 10549 counting only the distinct ones).

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

The square root of 243040424 is about 15589.7538146053. The cubic root of 243040424 is about 624.0597480046.

Adding to 243040424 its reverse (424040342), we get a palindrome (667080766).

The spelling of 243040424 in words is "two hundred forty-three million, forty thousand, four hundred twenty-four".