68242161 has 16 divisors (see below), whose sum is σ = 100270016. Its totient is φ = 41017536.

The previous prime is 68242159. The next prime is 68242201. The reversal of 68242161 is 16124286.

It is not a de Polignac number, because 68242161 - 2¹ = 68242159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68242121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18670 + ... + 22023.

It is an arithmetic number, because the mean of its divisors is an integer number (6266876).

Almost surely, 2^68242161 is an apocalyptic number.

It is an amenable number.

68242161 is a deficient number, since it is larger than the sum of its proper divisors (32027855).

68242161 is a wasteful number, since it uses less digits than its factorization.

68242161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40752.

The product of its digits is 4608, while the sum is 30.

The square root of 68242161 is about 8260.8813694424. The cubic root of 68242161 is about 408.6494546438.

The spelling of 68242161 in words is "sixty-eight million, two hundred forty-two thousand, one hundred sixty-one".