239681642 has 8 divisors (see below), whose sum is σ = 360044832. Its totient is φ = 119666700.

The previous prime is 239681641. The next prime is 239681647. The reversal of 239681642 is 246186932.

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

It is a self number, because there is not a number n which added to its sum of digits gives 239681642.

It is not an unprimeable number, because it can be changed into a prime (239681641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85334 + ... + 88097.

It is an arithmetic number, because the mean of its divisors is an integer number (45005604).

Almost surely, 2^239681642 is an apocalyptic number.

239681642 is a deficient number, since it is larger than the sum of its proper divisors (120363190).

239681642 is a wasteful number, since it uses less digits than its factorization.

239681642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174124.

The product of its digits is 124416, while the sum is 41.

The square root of 239681642 is about 15481.6550148878. The cubic root of 239681642 is about 621.1715984011.

The spelling of 239681642 in words is "two hundred thirty-nine million, six hundred eighty-one thousand, six hundred forty-two".