42393443 has 2 divisors, whose sum is σ = 42393444. Its totient is φ = 42393442.

The previous prime is 42393433. The next prime is 42393473. The reversal of 42393443 is 34439324.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42393443 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 (42393433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21196721 + 21196722.

It is an arithmetic number, because the mean of its divisors is an integer number (21196722).

Almost surely, 2^42393443 is an apocalyptic number.

42393443 is a deficient number, since it is larger than the sum of its proper divisors (1).

42393443 is an equidigital number, since it uses as much as digits as its factorization.

42393443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 32.

The square root of 42393443 is about 6511.0247273375. The cubic root of 42393443 is about 348.6847041418.

The spelling of 42393443 in words is "forty-two million, three hundred ninety-three thousand, four hundred forty-three".