243040052 has 6 divisors (see below), whose sum is σ = 425320098. Its totient is φ = 121520024.

The previous prime is 243040003. The next prime is 243040067. The reversal of 243040052 is 250040342.

It can be written as a sum of positive squares in only one way, i.e., 228493456 + 14546596 = 15116^2 + 3814^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30380003 + ... + 30380010.

It is an arithmetic number, because the mean of its divisors is an integer number (70886683).

Almost surely, 2^243040052 is an apocalyptic number.

It is an amenable number.

243040052 is a deficient number, since it is larger than the sum of its proper divisors (182280046).

243040052 is a wasteful number, since it uses less digits than its factorization.

243040052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60760017 (or 60760015 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 243040052 is about 15589.7418836875. The cubic root of 243040052 is about 624.0594296071.

Adding to 243040052 its reverse (250040342), we get a palindrome (493080394).

The spelling of 243040052 in words is "two hundred forty-three million, forty thousand, fifty-two".