42440243 has 6 divisors (see below), whose sum is σ = 44791884. Its totient is φ = 40206204.

The previous prime is 42440197. The next prime is 42440249. The reversal of 42440243 is 34204424.

42440243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42440243 - 2¹⁰ = 42439219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42440249) 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 5 ways as a sum of consecutive naturals, for example, 58421 + ... + 59142.

It is an arithmetic number, because the mean of its divisors is an integer number (7465314).

Almost surely, 2^42440243 is an apocalyptic number.

42440243 is a deficient number, since it is larger than the sum of its proper divisors (2351641).

42440243 is a wasteful number, since it uses less digits than its factorization.

42440243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117601 (or 117582 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 42440243 is about 6514.6176403531. The cubic root of 42440243 is about 348.8129664531.

Adding to 42440243 its reverse (34204424), we get a palindrome (76644667).

The spelling of 42440243 in words is "forty-two million, four hundred forty thousand, two hundred forty-three".