189642 has 8 divisors (see below), whose sum is σ = 379296. Its totient is φ = 63212.

The previous prime is 189619. The next prime is 189643. The reversal of 189642 is 246981.

189642 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.

189642 is an admirable number.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 189642.

It is not an unprimeable number, because it can be changed into a prime (189643) 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, 15798 + ... + 15809.

It is an arithmetic number, because the mean of its divisors is an integer number (47412).

2¹⁸⁹⁶⁴² is an apocalyptic number.

189642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189642 is a wasteful number, since it uses less digits than its factorization.

189642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31612.

The product of its digits is 3456, while the sum is 30.

The square root of 189642 is about 435.4790465683. The cubic root of 189642 is about 57.4528409799.

The spelling of 189642 in words is "one hundred eighty-nine thousand, six hundred forty-two".