165122 has 4 divisors (see below), whose sum is σ = 247686. Its totient is φ = 82560.

The previous prime is 165103. The next prime is 165133. The reversal of 165122 is 221561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221561 = 17 ⋅13033.

It can be written as a sum of positive squares in only one way, i.e., 116281 + 48841 = 341^2 + 221^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 165122.

It is an unprimeable number.

165122 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41279 + ... + 41282.

2¹⁶⁵¹²² is an apocalyptic number.

165122 is a deficient number, since it is larger than the sum of its proper divisors (82564).

165122 is an equidigital number, since it uses as much as digits as its factorization.

165122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82563.

The product of its digits is 120, while the sum is 17.

The square root of 165122 is about 406.3520641021. The cubic root of 165122 is about 54.8615803030.

Adding to 165122 its reverse (221561), we get a palindrome (386683).

The spelling of 165122 in words is "one hundred sixty-five thousand, one hundred twenty-two".