39807242 has 8 divisors (see below), whose sum is σ = 62853600. Its totient is φ = 18856044.

The previous prime is 39807239. The next prime is 39807253. The reversal of 39807242 is 24270893.

39807242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 523742 + ... + 523817.

It is an arithmetic number, because the mean of its divisors is an integer number (7856700).

Almost surely, 2^39807242 is an apocalyptic number.

39807242 is a deficient number, since it is larger than the sum of its proper divisors (23046358).

39807242 is a wasteful number, since it uses less digits than its factorization.

39807242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047580.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 39807242 is about 6309.2980592139. The cubic root of 39807242 is about 341.4449519585. Note that the first 3 decimals are identical.

The spelling of 39807242 in words is "thirty-nine million, eight hundred seven thousand, two hundred forty-two".