142340440171 has 2 divisors, whose sum is σ = 142340440172. Its totient is φ = 142340440170.

The previous prime is 142340440159. The next prime is 142340440201. The reversal of 142340440171 is 171044043241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142340440171 is a prime.

It is not a weakly prime, because it can be changed into another prime (142340440771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71170220085 + 71170220086.

It is an arithmetic number, because the mean of its divisors is an integer number (71170220086).

Almost surely, 2^142340440171 is an apocalyptic number.

142340440171 is a deficient number, since it is larger than the sum of its proper divisors (1).

142340440171 is an equidigital number, since it uses as much as digits as its factorization.

142340440171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 31.

The spelling of 142340440171 in words is "one hundred forty-two billion, three hundred forty million, four hundred forty thousand, one hundred seventy-one".