68042141 has 2 divisors, whose sum is σ = 68042142. Its totient is φ = 68042140.

The previous prime is 68042123. The next prime is 68042171. The reversal of 68042141 is 14124086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66765241 + 1276900 = 8171^2 + 1130^2 .

It is a cyclic number.

It is not a de Polignac number, because 68042141 - 2⁶ = 68042077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68042141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68042171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34021070 + 34021071.

It is an arithmetic number, because the mean of its divisors is an integer number (34021071).

Almost surely, 2^68042141 is an apocalyptic number.

It is an amenable number.

68042141 is a deficient number, since it is larger than the sum of its proper divisors (1).

68042141 is an equidigital number, since it uses as much as digits as its factorization.

68042141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 68042141 is about 8248.7660289282. The cubic root of 68042141 is about 408.2498089703.

The spelling of 68042141 in words is "sixty-eight million, forty-two thousand, one hundred forty-one".