42838056841 has 2 divisors, whose sum is σ = 42838056842. Its totient is φ = 42838056840.

The previous prime is 42838056839. The next prime is 42838056857. The reversal of 42838056841 is 14865083824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41454588816 + 1383468025 = 203604^2 + 37195^2 .

It is a cyclic number.

It is not a de Polignac number, because 42838056841 - 2¹ = 42838056839 is a prime.

It is a super-2 number, since 2×42838056841² (a number of 22 digits) contains 22 as substring.

Together with 42838056839, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42838056871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21419028420 + 21419028421.

It is an arithmetic number, because the mean of its divisors is an integer number (21419028421).

Almost surely, 2^42838056841 is an apocalyptic number.

It is an amenable number.

42838056841 is a deficient number, since it is larger than the sum of its proper divisors (1).

42838056841 is an equidigital number, since it uses as much as digits as its factorization.

42838056841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1474560, while the sum is 49.

The spelling of 42838056841 in words is "forty-two billion, eight hundred thirty-eight million, fifty-six thousand, eight hundred forty-one".