42844142833 has 2 divisors, whose sum is σ = 42844142834. Its totient is φ = 42844142832.

The previous prime is 42844142821. The next prime is 42844142881. The reversal of 42844142833 is 33824144824.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41457846544 + 1386296289 = 203612^2 + 37233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42844142833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42844142833.

It is not a weakly prime, because it can be changed into another prime (42844142893) 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, 21422071416 + 21422071417.

It is an arithmetic number, because the mean of its divisors is an integer number (21422071417).

Almost surely, 2^42844142833 is an apocalyptic number.

It is an amenable number.

42844142833 is a deficient number, since it is larger than the sum of its proper divisors (1).

42844142833 is an equidigital number, since it uses as much as digits as its factorization.

42844142833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 589824, while the sum is 43.

The spelling of 42844142833 in words is "forty-two billion, eight hundred forty-four million, one hundred forty-two thousand, eight hundred thirty-three".