642830619239 has 2 divisors, whose sum is σ = 642830619240. Its totient is φ = 642830619238.

The previous prime is 642830619227. The next prime is 642830619307. The reversal of 642830619239 is 932916038246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 642830619239 - 2³⁶ = 574111142503 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642830619439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321415309619 + 321415309620.

It is an arithmetic number, because the mean of its divisors is an integer number (321415309620).

Almost surely, 2^642830619239 is an apocalyptic number.

642830619239 is a deficient number, since it is larger than the sum of its proper divisors (1).

642830619239 is an equidigital number, since it uses as much as digits as its factorization.

642830619239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3359232, while the sum is 53.

The spelling of 642830619239 in words is "six hundred forty-two billion, eight hundred thirty million, six hundred nineteen thousand, two hundred thirty-nine".