142536510509 has 2 divisors, whose sum is σ = 142536510510. Its totient is φ = 142536510508.

The previous prime is 142536510503. The next prime is 142536510607. The reversal of 142536510509 is 905015635241.

142536510509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139709993284 + 2826517225 = 373778^2 + 53165^2 .

It is an emirp because it is prime and its reverse (905015635241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142536510509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142536510503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71268255254 + 71268255255.

It is an arithmetic number, because the mean of its divisors is an integer number (71268255255).

Almost surely, 2^142536510509 is an apocalyptic number.

It is an amenable number.

142536510509 is a deficient number, since it is larger than the sum of its proper divisors (1).

142536510509 is an equidigital number, since it uses as much as digits as its factorization.

142536510509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 142536510509 in words is "one hundred forty-two billion, five hundred thirty-six million, five hundred ten thousand, five hundred nine".