68242117 has 2 divisors, whose sum is σ = 68242118. Its totient is φ = 68242116.

The previous prime is 68242093. The next prime is 68242121. The reversal of 68242117 is 71124286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47320641 + 20921476 = 6879^2 + 4574^2 .

It is a cyclic number.

It is not a de Polignac number, because 68242117 - 2¹¹ = 68240069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68242417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34121058 + 34121059.

It is an arithmetic number, because the mean of its divisors is an integer number (34121059).

Almost surely, 2^68242117 is an apocalyptic number.

It is an amenable number.

68242117 is a deficient number, since it is larger than the sum of its proper divisors (1).

68242117 is an equidigital number, since it uses as much as digits as its factorization.

68242117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 31.

The square root of 68242117 is about 8260.8787062878. The cubic root of 68242117 is about 408.6493668165.

The spelling of 68242117 in words is "sixty-eight million, two hundred forty-two thousand, one hundred seventeen".