164042 has 4 divisors (see below), whose sum is σ = 246066. Its totient is φ = 82020.

The previous prime is 164039. The next prime is 164051. The reversal of 164042 is 240461.

164042 is nontrivially palindromic in base 3.

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., 90601 + 73441 = 301^2 + 271^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 164042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41009 + ... + 41012.

2¹⁶⁴⁰⁴² is an apocalyptic number.

164042 is a deficient number, since it is larger than the sum of its proper divisors (82024).

164042 is an equidigital number, since it uses as much as digits as its factorization.

164042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82023.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 164042 is about 405.0209871105. The cubic root of 164042 is about 54.7417090230.

Subtracting from 164042 its sum of digits (17), we obtain a square (164025 = 405²).

The spelling of 164042 in words is "one hundred sixty-four thousand, forty-two".