168145 has 4 divisors (see below), whose sum is σ = 201780. Its totient is φ = 134512.

The previous prime is 168143. The next prime is 168151. The reversal of 168145 is 541861.

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

It can be written as a sum of positive squares in 2 ways, for example, as 44944 + 123201 = 212^2 + 351^2 .

It is a cyclic number.

It is not a de Polignac number, because 168145 - 2¹ = 168143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168143) 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 in 3 ways as a sum of consecutive naturals, for example, 16810 + ... + 16819.

It is an arithmetic number, because the mean of its divisors is an integer number (50445).

2¹⁶⁸¹⁴⁵ is an apocalyptic number.

It is an amenable number.

168145 is a deficient number, since it is larger than the sum of its proper divisors (33635).

168145 is an equidigital number, since it uses as much as digits as its factorization.

168145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33634.

The product of its digits is 960, while the sum is 25.

The square root of 168145 is about 410.0548743766. The cubic root of 168145 is about 55.1943537248.

It can be divided in two parts, 168 and 145, that added together give a palindrome (313).

The spelling of 168145 in words is "one hundred sixty-eight thousand, one hundred forty-five".