68042123 has 2 divisors, whose sum is σ = 68042124. Its totient is φ = 68042122.

The previous prime is 68042113. The next prime is 68042141. The reversal of 68042123 is 32124086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68042123 - 2²⁰ = 66993547 is a prime.

It is equal to p_4009670 and since 68042123 and 4009670 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 68042092 and 68042101.

It is not a weakly prime, because it can be changed into another prime (68042113) 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 as a sum of consecutive naturals, namely, 34021061 + 34021062.

It is an arithmetic number, because the mean of its divisors is an integer number (34021062).

Almost surely, 2^68042123 is an apocalyptic number.

68042123 is a deficient number, since it is larger than the sum of its proper divisors (1).

68042123 is an equidigital number, since it uses as much as digits as its factorization.

68042123 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 26.

The square root of 68042123 is about 8248.7649378558. The cubic root of 68042123 is about 408.2497729705.

The spelling of 68042123 in words is "sixty-eight million, forty-two thousand, one hundred twenty-three".