39942043 has 12 divisors (see below), whose sum is σ = 41825160. Its totient is φ = 38137440.

The previous prime is 39942037. The next prime is 39942059. The reversal of 39942043 is 34024993.

It is not a de Polignac number, because 39942043 - 2⁵ = 39942011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39942143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85296 + ... + 85762.

It is an arithmetic number, because the mean of its divisors is an integer number (3485430).

Almost surely, 2^39942043 is an apocalyptic number.

39942043 is a deficient number, since it is larger than the sum of its proper divisors (1883117).

39942043 is an equidigital number, since it uses as much as digits as its factorization.

39942043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 39942043 is about 6319.9717562660. The cubic root of 39942043 is about 341.8299343690.

The spelling of 39942043 in words is "thirty-nine million, nine hundred forty-two thousand, forty-three".