2240243 has 4 divisors (see below), whose sum is σ = 2372040. Its totient is φ = 2108448.

The previous prime is 2240213. The next prime is 2240267. The reversal of 2240243 is 3420422.

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 2240243 - 2⁸ = 2239987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 131779 = 2240243 / (2 + 2 + 4 + 0 + 2 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2240213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65873 + ... + 65906.

It is an arithmetic number, because the mean of its divisors is an integer number (593010).

2^2240243 is an apocalyptic number.

2240243 is a deficient number, since it is larger than the sum of its proper divisors (131797).

2240243 is a wasteful number, since it uses less digits than its factorization.

2240243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131796.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 2240243 is about 1496.7441331103. The cubic root of 2240243 is about 130.8473836002.

Adding to 2240243 its reverse (3420422), we get a palindrome (5660665).

The spelling of 2240243 in words is "two million, two hundred forty thousand, two hundred forty-three".