42894834839 has 2 divisors, whose sum is σ = 42894834840. Its totient is φ = 42894834838.

The previous prime is 42894834751. The next prime is 42894834859. The reversal of 42894834839 is 93843849824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42894834839 - 2²⁴ = 42878057623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42894834859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21447417419 + 21447417420.

It is an arithmetic number, because the mean of its divisors is an integer number (21447417420).

Almost surely, 2^42894834839 is an apocalyptic number.

42894834839 is a deficient number, since it is larger than the sum of its proper divisors (1).

42894834839 is an equidigital number, since it uses as much as digits as its factorization.

42894834839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47775744, while the sum is 62.

The spelling of 42894834839 in words is "forty-two billion, eight hundred ninety-four million, eight hundred thirty-four thousand, eight hundred thirty-nine".