142565513 has 2 divisors, whose sum is σ = 142565514. Its totient is φ = 142565512.

The previous prime is 142565471. The next prime is 142565543. The reversal of 142565513 is 315565241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85969984 + 56595529 = 9272^2 + 7523^2 .

It is a cyclic number.

It is not a de Polignac number, because 142565513 - 2⁸ = 142565257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 142565513.

It is not a weakly prime, because it can be changed into another prime (142565543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71282756 + 71282757.

It is an arithmetic number, because the mean of its divisors is an integer number (71282757).

Almost surely, 2^142565513 is an apocalyptic number.

It is an amenable number.

142565513 is a deficient number, since it is larger than the sum of its proper divisors (1).

142565513 is an equidigital number, since it uses as much as digits as its factorization.

142565513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 32.

The square root of 142565513 is about 11940.0801086090. The cubic root of 142565513 is about 522.4019953087.

The spelling of 142565513 in words is "one hundred forty-two million, five hundred sixty-five thousand, five hundred thirteen".