142630639 has 2 divisors, whose sum is σ = 142630640. Its totient is φ = 142630638.

The previous prime is 142630619. The next prime is 142630651. The reversal of 142630639 is 936036241.

It is a happy number.

142630639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142630639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142630619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71315319 + 71315320.

It is an arithmetic number, because the mean of its divisors is an integer number (71315320).

Almost surely, 2^142630639 is an apocalyptic number.

142630639 is a deficient number, since it is larger than the sum of its proper divisors (1).

142630639 is an equidigital number, since it uses as much as digits as its factorization.

142630639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 142630639 is about 11942.8069983568. The cubic root of 142630639 is about 522.4815301424.

The spelling of 142630639 in words is "one hundred forty-two million, six hundred thirty thousand, six hundred thirty-nine".