142790317 has 2 divisors, whose sum is σ = 142790318. Its totient is φ = 142790316.

The previous prime is 142790299. The next prime is 142790359. The reversal of 142790317 is 713097241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139499721 + 3290596 = 11811^2 + 1814^2 .

It is an emirp because it is prime and its reverse (713097241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142790317 - 2⁷ = 142790189 is a prime.

It is a congruent number.

It is a weakly prime.

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, 71395158 + 71395159.

It is an arithmetic number, because the mean of its divisors is an integer number (71395159).

Almost surely, 2^142790317 is an apocalyptic number.

It is an amenable number.

142790317 is a deficient number, since it is larger than the sum of its proper divisors (1).

142790317 is an equidigital number, since it uses as much as digits as its factorization.

142790317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 142790317 is about 11949.4902401734. The cubic root of 142790317 is about 522.6764337813.

The spelling of 142790317 in words is "one hundred forty-two million, seven hundred ninety thousand, three hundred seventeen".