39142429673 has 2 divisors, whose sum is σ = 39142429674. Its totient is φ = 39142429672.

The previous prime is 39142429643. The next prime is 39142429747. The reversal of 39142429673 is 37692424193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20376991504 + 18765438169 = 142748^2 + 136987^2 .

It is an emirp because it is prime and its reverse (37692424193) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39142429673 - 2⁶ = 39142429609 is a prime.

It is not a weakly prime, because it can be changed into another prime (39142429643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19571214836 + 19571214837.

It is an arithmetic number, because the mean of its divisors is an integer number (19571214837).

Almost surely, 2^39142429673 is an apocalyptic number.

It is an amenable number.

39142429673 is a deficient number, since it is larger than the sum of its proper divisors (1).

39142429673 is an equidigital number, since it uses as much as digits as its factorization.

39142429673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 50.

The spelling of 39142429673 in words is "thirty-nine billion, one hundred forty-two million, four hundred twenty-nine thousand, six hundred seventy-three".