39842 has 8 divisors (see below), whose sum is σ = 65232. Its totient is φ = 18100.

The previous prime is 39841. The next prime is 39847. The reversal of 39842 is 24893.

39842 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 not an unprimeable number, because it can be changed into a prime (39841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884 + ... + 927.

It is an arithmetic number, because the mean of its divisors is an integer number (8154).

2³⁹⁸⁴² is an apocalyptic number.

39842 is a deficient number, since it is larger than the sum of its proper divisors (25390).

39842 is a wasteful number, since it uses less digits than its factorization.

39842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824.

The product of its digits is 1728, while the sum is 26.

The square root of 39842 is about 199.6046091652. The cubic root of 39842 is about 34.1544301478.

The spelling of 39842 in words is "thirty-nine thousand, eight hundred forty-two".