165142 has 4 divisors (see below), whose sum is σ = 247716. Its totient is φ = 82570.

The previous prime is 165133. The next prime is 165161. The reversal of 165142 is 241561.

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

It is a congruent number.

It is an unprimeable number.

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, 41284 + ... + 41287.

It is an arithmetic number, because the mean of its divisors is an integer number (61929).

2¹⁶⁵¹⁴² is an apocalyptic number.

165142 is a deficient number, since it is larger than the sum of its proper divisors (82574).

165142 is an equidigital number, since it uses as much as digits as its factorization.

165142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82573.

The product of its digits is 240, while the sum is 19.

The square root of 165142 is about 406.3766725588. The cubic root of 165142 is about 54.8637952054.

The spelling of 165142 in words is "one hundred sixty-five thousand, one hundred forty-two".