220240243 has 4 divisors (see below), whose sum is σ = 226192720. Its totient is φ = 214287768.

The previous prime is 220240231. The next prime is 220240247. The reversal of 220240243 is 342042022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220240243 - 2⁵ = 220240211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220240243.

It is not an unprimeable number, because it can be changed into a prime (220240247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2976183 + ... + 2976256.

It is an arithmetic number, because the mean of its divisors is an integer number (56548180).

Almost surely, 2^220240243 is an apocalyptic number.

220240243 is a deficient number, since it is larger than the sum of its proper divisors (5952477).

220240243 is an equidigital number, since it uses as much as digits as its factorization.

220240243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5952476.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 220240243 is about 14840.4933543329. The cubic root of 220240243 is about 603.9007363958.

Adding to 220240243 its reverse (342042022), we get a palindrome (562282265).

The spelling of 220240243 in words is "two hundred twenty million, two hundred forty thousand, two hundred forty-three".