142322513 has 2 divisors, whose sum is σ = 142322514. Its totient is φ = 142322512.

The previous prime is 142322497. The next prime is 142322527. The reversal of 142322513 is 315223241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139405249 + 2917264 = 11807^2 + 1708^2 .

It is an emirp because it is prime and its reverse (315223241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142322513 - 2⁴ = 142322497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (142322563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71161256 + 71161257.

It is an arithmetic number, because the mean of its divisors is an integer number (71161257).

Almost surely, 2^142322513 is an apocalyptic number.

It is an amenable number.

142322513 is a deficient number, since it is larger than the sum of its proper divisors (1).

142322513 is an equidigital number, since it uses as much as digits as its factorization.

142322513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 23.

The square root of 142322513 is about 11929.8999576694. The cubic root of 142322513 is about 522.1050186770.

Adding to 142322513 its reverse (315223241), we get a palindrome (457545754).

The spelling of 142322513 in words is "one hundred forty-two million, three hundred twenty-two thousand, five hundred thirteen".