12142517 has 2 divisors, whose sum is σ = 12142518. Its totient is φ = 12142516.

The previous prime is 12142513. The next prime is 12142531. The reversal of 12142517 is 71524121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11383876 + 758641 = 3374^2 + 871^2 .

It is a cyclic number.

It is not a de Polignac number, because 12142517 - 2² = 12142513 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12142492 and 12142501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12142511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6071258 + 6071259.

It is an arithmetic number, because the mean of its divisors is an integer number (6071259).

Almost surely, 2^12142517 is an apocalyptic number.

It is an amenable number.

12142517 is a deficient number, since it is larger than the sum of its proper divisors (1).

12142517 is an equidigital number, since it uses as much as digits as its factorization.

12142517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 560, while the sum is 23.

The square root of 12142517 is about 3484.6114561024. The cubic root of 12142517 is about 229.8456241946.

Adding to 12142517 its reverse (71524121), we get a palindrome (83666638).

The spelling of 12142517 in words is "twelve million, one hundred forty-two thousand, five hundred seventeen".