142906637 has 2 divisors, whose sum is σ = 142906638. Its totient is φ = 142906636.

The previous prime is 142906633. The next prime is 142906663. The reversal of 142906637 is 736609241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140873161 + 2033476 = 11869^2 + 1426^2 .

It is an emirp because it is prime and its reverse (736609241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142906637 - 2² = 142906633 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 142906637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142906633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71453318 + 71453319.

It is an arithmetic number, because the mean of its divisors is an integer number (71453319).

Almost surely, 2^142906637 is an apocalyptic number.

It is an amenable number.

142906637 is a deficient number, since it is larger than the sum of its proper divisors (1).

142906637 is an equidigital number, since it uses as much as digits as its factorization.

142906637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 142906637 is about 11954.3564025840. The cubic root of 142906637 is about 522.8183230038.

The spelling of 142906637 in words is "one hundred forty-two million, nine hundred six thousand, six hundred thirty-seven".