142243044173 has 2 divisors, whose sum is σ = 142243044174. Its totient is φ = 142243044172.

The previous prime is 142243044149. The next prime is 142243044257. The reversal of 142243044173 is 371440342241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74683598089 + 67559446084 = 273283^2 + 259922^2 .

It is an emirp because it is prime and its reverse (371440342241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142243044173 - 2²² = 142238849869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142243044143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71121522086 + 71121522087.

It is an arithmetic number, because the mean of its divisors is an integer number (71121522087).

Almost surely, 2^142243044173 is an apocalyptic number.

It is an amenable number.

142243044173 is a deficient number, since it is larger than the sum of its proper divisors (1).

142243044173 is an equidigital number, since it uses as much as digits as its factorization.

142243044173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 35.

The spelling of 142243044173 in words is "one hundred forty-two billion, two hundred forty-three million, forty-four thousand, one hundred seventy-three".