142522517 has 2 divisors, whose sum is σ = 142522518. Its totient is φ = 142522516.

The previous prime is 142522507. The next prime is 142522561. The reversal of 142522517 is 715225241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141943396 + 579121 = 11914^2 + 761^2 .

It is a cyclic number.

It is not a de Polignac number, because 142522517 - 2¹⁰ = 142521493 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142522517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142522507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71261258 + 71261259.

It is an arithmetic number, because the mean of its divisors is an integer number (71261259).

Almost surely, 2^142522517 is an apocalyptic number.

It is an amenable number.

142522517 is a deficient number, since it is larger than the sum of its proper divisors (1).

142522517 is an equidigital number, since it uses as much as digits as its factorization.

142522517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5600, while the sum is 29.

The square root of 142522517 is about 11938.2794824045. The cubic root of 142522517 is about 522.3494733626.

Adding to 142522517 its reverse (715225241), we get a palindrome (857747758).

The spelling of 142522517 in words is "one hundred forty-two million, five hundred twenty-two thousand, five hundred seventeen".