240243 has 8 divisors (see below), whose sum is σ = 325008. Its totient is φ = 157824.

The previous prime is 240209. The next prime is 240257. The reversal of 240243 is 342042.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 240243 - 2⁹ = 239731 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 240243.

It is not an unprimeable number, because it can be changed into a prime (240203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330 + ... + 767.

It is an arithmetic number, because the mean of its divisors is an integer number (40626).

2²⁴⁰²⁴³ is an apocalyptic number.

240243 is a deficient number, since it is larger than the sum of its proper divisors (84765).

240243 is a wasteful number, since it uses less digits than its factorization.

240243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 240243 is about 490.1458966471. The cubic root of 240243 is about 62.1656168638.

Adding to 240243 its reverse (342042), we get a palindrome (582285).

The spelling of 240243 in words is "two hundred forty thousand, two hundred forty-three", and thus it is an iban number.