168442174 has 4 divisors (see below), whose sum is σ = 252663264. Its totient is φ = 84221086.

The previous prime is 168442159. The next prime is 168442177. The reversal of 168442174 is 471244861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 471244861 = 23 ⋅20488907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168442177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42110542 + ... + 42110545.

It is an arithmetic number, because the mean of its divisors is an integer number (63165816).

Almost surely, 2^168442174 is an apocalyptic number.

168442174 is a deficient number, since it is larger than the sum of its proper divisors (84221090).

168442174 is an equidigital number, since it uses as much as digits as its factorization.

168442174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84221089.

The product of its digits is 43008, while the sum is 37.

The square root of 168442174 is about 12978.5274203201. The cubic root of 168442174 is about 552.2685082228.

The spelling of 168442174 in words is "one hundred sixty-eight million, four hundred forty-two thousand, one hundred seventy-four".