2440000243 has 2 divisors, whose sum is σ = 2440000244. Its totient is φ = 2440000242.

The previous prime is 2440000229. The next prime is 2440000313. The reversal of 2440000243 is 3420000442.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2440000243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2440000243.

It is not a weakly prime, because it can be changed into another prime (2440000223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1220000121 + 1220000122.

It is an arithmetic number, because the mean of its divisors is an integer number (1220000122).

Almost surely, 2^2440000243 is an apocalyptic number.

2440000243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2440000243 is an equidigital number, since it uses as much as digits as its factorization.

2440000243 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2440000243 is about 49396.3586006094. The cubic root of 2440000243 is about 1346.2631441446.

Adding to 2440000243 its reverse (3420000442), we get a palindrome (5860000685).

The spelling of 2440000243 in words is "two billion, four hundred forty million, two hundred forty-three", and thus it is an aban number.