169042 has 4 divisors (see below), whose sum is σ = 253566. Its totient is φ = 84520.

The previous prime is 169019. The next prime is 169049. The reversal of 169042 is 240961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 168921 + 121 = 411^2 + 11^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (169049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42259 + ... + 42262.

2¹⁶⁹⁰⁴² is an apocalyptic number.

169042 is a deficient number, since it is larger than the sum of its proper divisors (84524).

169042 is an equidigital number, since it uses as much as digits as its factorization.

169042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84523.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 169042 is about 411.1471755953. The cubic root of 169042 is about 55.2923278076.

The spelling of 169042 in words is "one hundred sixty-nine thousand, forty-two".