2440043 has 2 divisors, whose sum is σ = 2440044. Its totient is φ = 2440042.

The previous prime is 2440021. The next prime is 2440049. The reversal of 2440043 is 3400442.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2440043 - 2¹⁸ = 2177899 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2440049) 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 as a sum of consecutive naturals, namely, 1220021 + 1220022.

It is an arithmetic number, because the mean of its divisors is an integer number (1220022).

2^2440043 is an apocalyptic number.

2440043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2440043 is an equidigital number, since it uses as much as digits as its factorization.

2440043 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2440043 is about 1562.0636990853. The cubic root of 2440043 is about 134.6271007783.

Adding to 2440043 its reverse (3400442), we get a palindrome (5840485).

The spelling of 2440043 in words is "two million, four hundred forty thousand, forty-three".