168142073 has 8 divisors (see below), whose sum is σ = 185245056. Its totient is φ = 151342000.

The previous prime is 168142069. The next prime is 168142081. The reversal of 168142073 is 370241861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168142073 - 2² = 168142069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168142003) 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 in 7 ways as a sum of consecutive naturals, for example, 74561 + ... + 76782.

It is an arithmetic number, because the mean of its divisors is an integer number (23155632).

Almost surely, 2^168142073 is an apocalyptic number.

It is an amenable number.

168142073 is a deficient number, since it is larger than the sum of its proper divisors (17102983).

168142073 is a wasteful number, since it uses less digits than its factorization.

168142073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151455.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 168142073 is about 12966.9608235700. The cubic root of 168142073 is about 551.9403345596.

It can be divided in two parts, 168 and 142073, that added together give a palindrome (142241).

The spelling of 168142073 in words is "one hundred sixty-eight million, one hundred forty-two thousand, seventy-three".