142117512571 has 2 divisors, whose sum is σ = 142117512572. Its totient is φ = 142117512570.

The previous prime is 142117512529. The next prime is 142117512587. The reversal of 142117512571 is 175215711241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142117512571 - 2¹³ = 142117504379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142117512571.

It is not a weakly prime, because it can be changed into another prime (142117519571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71058756285 + 71058756286.

It is an arithmetic number, because the mean of its divisors is an integer number (71058756286).

Almost surely, 2^142117512571 is an apocalyptic number.

142117512571 is a deficient number, since it is larger than the sum of its proper divisors (1).

142117512571 is an equidigital number, since it uses as much as digits as its factorization.

142117512571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19600, while the sum is 37.

The spelling of 142117512571 in words is "one hundred forty-two billion, one hundred seventeen million, five hundred twelve thousand, five hundred seventy-one".