142117512529 has 2 divisors, whose sum is σ = 142117512530. Its totient is φ = 142117512528.

The previous prime is 142117512527. The next prime is 142117512571. The reversal of 142117512529 is 925215711241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73996512529 + 68121000000 = 272023^2 + 261000^2 .

It is a cyclic number.

It is not a de Polignac number, because 142117512529 - 2¹ = 142117512527 is a prime.

Together with 142117512527, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 142117512491 and 142117512500.

It is not a weakly prime, because it can be changed into another prime (142117512527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71058756264 + 71058756265.

It is an arithmetic number, because the mean of its divisors is an integer number (71058756265).

Almost surely, 2^142117512529 is an apocalyptic number.

It is an amenable number.

142117512529 is a deficient number, since it is larger than the sum of its proper divisors (1).

142117512529 is an equidigital number, since it uses as much as digits as its factorization.

142117512529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 40.

The spelling of 142117512529 in words is "one hundred forty-two billion, one hundred seventeen million, five hundred twelve thousand, five hundred twenty-nine".