2440243 has 4 divisors (see below), whose sum is σ = 2627968. Its totient is φ = 2252520.

The previous prime is 2440241. The next prime is 2440247. The reversal of 2440243 is 3420442.

2440243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3420442 = 2 ⋅1710221.

It is a cyclic number.

It is not a de Polignac number, because 2440243 - 2¹ = 2440241 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 2440243.

It is not an unprimeable number, because it can be changed into a prime (2440241) 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 3 ways as a sum of consecutive naturals, for example, 93843 + ... + 93868.

It is an arithmetic number, because the mean of its divisors is an integer number (656992).

2^2440243 is an apocalyptic number.

2440243 is a deficient number, since it is larger than the sum of its proper divisors (187725).

2440243 is a wasteful number, since it uses less digits than its factorization.

2440243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187724.

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

The square root of 2440243 is about 1562.1277156494. The cubic root of 2440243 is about 134.6307789490.

Adding to 2440243 its reverse (3420442), we get a palindrome (5860685).

The spelling of 2440243 in words is "two million, four hundred forty thousand, two hundred forty-three".