168081242 has 16 divisors (see below), whose sum is σ = 289414080. Its totient is φ = 71716128.

The previous prime is 168081241. The next prime is 168081283. The reversal of 168081242 is 242180861.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 168081199 and 168081208.

It is not an unprimeable number, because it can be changed into a prime (168081241) 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, 23267 + ... + 29622.

It is an arithmetic number, because the mean of its divisors is an integer number (18088380).

Almost surely, 2^168081242 is an apocalyptic number.

168081242 is a deficient number, since it is larger than the sum of its proper divisors (121332838).

168081242 is a wasteful number, since it uses less digits than its factorization.

168081242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53125.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 168081242 is about 12964.6149962118. The cubic root of 168081242 is about 551.8737655927.

The spelling of 168081242 in words is "one hundred sixty-eight million, eighty-one thousand, two hundred forty-two".