39942518 has 32 divisors (see below), whose sum is σ = 74995200. Its totient is φ = 15500160.

The previous prime is 39942509. The next prime is 39942521. The reversal of 39942518 is 81524993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66383 + ... + 66981.

It is an arithmetic number, because the mean of its divisors is an integer number (2343600).

Almost surely, 2^39942518 is an apocalyptic number.

39942518 is a deficient number, since it is larger than the sum of its proper divisors (35052682).

39942518 is a wasteful number, since it uses less digits than its factorization.

39942518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052.

The product of its digits is 77760, while the sum is 41.

The square root of 39942518 is about 6320.0093354361. The cubic root of 39942518 is about 341.8312894038.

The spelling of 39942518 in words is "thirty-nine million, nine hundred forty-two thousand, five hundred eighteen".