42168601 has 2 divisors, whose sum is σ = 42168602. Its totient is φ = 42168600.

The previous prime is 42168563. The next prime is 42168613. The reversal of 42168601 is 10686124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39992976 + 2175625 = 6324^2 + 1475^2 .

It is a cyclic number.

It is not a de Polignac number, because 42168601 - 2⁹ = 42168089 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42168601.

It is not a weakly prime, because it can be changed into another prime (42168671) 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 as a sum of consecutive naturals, namely, 21084300 + 21084301.

It is an arithmetic number, because the mean of its divisors is an integer number (21084301).

Almost surely, 2^42168601 is an apocalyptic number.

It is an amenable number.

42168601 is a deficient number, since it is larger than the sum of its proper divisors (1).

42168601 is an equidigital number, since it uses as much as digits as its factorization.

42168601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 42168601 is about 6493.7355197144. The cubic root of 42168601 is about 348.0671717123.

The spelling of 42168601 in words is "forty-two million, one hundred sixty-eight thousand, six hundred one".