142426637 has 2 divisors, whose sum is σ = 142426638. Its totient is φ = 142426636.

The previous prime is 142426619. The next prime is 142426667. The reversal of 142426637 is 736624241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133148521 + 9278116 = 11539^2 + 3046^2 .

It is an emirp because it is prime and its reverse (736624241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142426637 - 2¹² = 142422541 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 142426597 and 142426606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142426607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71213318 + 71213319.

It is an arithmetic number, because the mean of its divisors is an integer number (71213319).

Almost surely, 2^142426637 is an apocalyptic number.

It is an amenable number.

142426637 is a deficient number, since it is larger than the sum of its proper divisors (1).

142426637 is an equidigital number, since it uses as much as digits as its factorization.

142426637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 35.

The square root of 142426637 is about 11934.2631527883. The cubic root of 142426637 is about 522.2323126884.

The spelling of 142426637 in words is "one hundred forty-two million, four hundred twenty-six thousand, six hundred thirty-seven".