169642 has 12 divisors (see below), whose sum is σ = 280098. Its totient is φ = 77000.

The previous prime is 169639. The next prime is 169649. The reversal of 169642 is 246961.

169642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 116281 + 53361 = 341^2 + 231^2 .

It is an Ulam number.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 169642.

It is not an unprimeable number, because it can be changed into a prime (169649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109 + ... + 592.

2¹⁶⁹⁶⁴² is an apocalyptic number.

169642 is a deficient number, since it is larger than the sum of its proper divisors (110456).

169642 is a wasteful number, since it uses less digits than its factorization.

169642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725 (or 714 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 169642 is about 411.8761949907. The cubic root of 169642 is about 55.3576690104.

The spelling of 169642 in words is "one hundred sixty-nine thousand, six hundred forty-two".