243040144 has 10 divisors (see below), whose sum is σ = 470890310. Its totient is φ = 121520064.

The previous prime is 243040129. The next prime is 243040157. The reversal of 243040144 is 441040342.

It can be written as a sum of positive squares in only one way, i.e., 156550144 + 86490000 = 12512^2 + 9300^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7594989 + ... + 7595020.

It is an arithmetic number, because the mean of its divisors is an integer number (47089031).

Almost surely, 2^243040144 is an apocalyptic number.

It is an amenable number.

243040144 is a deficient number, since it is larger than the sum of its proper divisors (227850166).

243040144 is a wasteful number, since it uses less digits than its factorization.

243040144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15190017 (or 15190011 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 243040144 is about 15589.7448343454. The cubic root of 243040144 is about 624.0595083506.

Adding to 243040144 its reverse (441040342), we get a palindrome (684080486).

The spelling of 243040144 in words is "two hundred forty-three million, forty thousand, one hundred forty-four".