68242841 has 2 divisors, whose sum is σ = 68242842. Its totient is φ = 68242840.

The previous prime is 68242831. The next prime is 68242843. The reversal of 68242841 is 14824286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48706441 + 19536400 = 6979^2 + 4420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68242841 is a prime.

Together with 68242843, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68242843) 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, 34121420 + 34121421.

It is an arithmetic number, because the mean of its divisors is an integer number (34121421).

Almost surely, 2^68242841 is an apocalyptic number.

It is an amenable number.

68242841 is a deficient number, since it is larger than the sum of its proper divisors (1).

68242841 is an equidigital number, since it uses as much as digits as its factorization.

68242841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24576, while the sum is 35.

The square root of 68242841 is about 8260.9225271758. The cubic root of 68242841 is about 408.6508119704.

The spelling of 68242841 in words is "sixty-eight million, two hundred forty-two thousand, eight hundred forty-one".