142705193 has 2 divisors, whose sum is σ = 142705194. Its totient is φ = 142705192.

The previous prime is 142705177. The next prime is 142705217. The reversal of 142705193 is 391507241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76965529 + 65739664 = 8773^2 + 8108^2 .

It is an emirp because it is prime and its reverse (391507241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142705193 - 2⁴ = 142705177 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (142705103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71352596 + 71352597.

It is an arithmetic number, because the mean of its divisors is an integer number (71352597).

Almost surely, 2^142705193 is an apocalyptic number.

It is an amenable number.

142705193 is a deficient number, since it is larger than the sum of its proper divisors (1).

142705193 is an equidigital number, since it uses as much as digits as its factorization.

142705193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 142705193 is about 11945.9278835928. The cubic root of 142705193 is about 522.5725491624.

The spelling of 142705193 in words is "one hundred forty-two million, seven hundred five thousand, one hundred ninety-three".