42045311839 has 2 divisors, whose sum is σ = 42045311840. Its totient is φ = 42045311838.

The previous prime is 42045311837. The next prime is 42045311881. The reversal of 42045311839 is 93811354024.

It is a happy number.

42045311839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42045311839 - 2¹ = 42045311837 is a prime.

Together with 42045311837, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42045311837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21022655919 + 21022655920.

It is an arithmetic number, because the mean of its divisors is an integer number (21022655920).

Almost surely, 2^42045311839 is an apocalyptic number.

42045311839 is a deficient number, since it is larger than the sum of its proper divisors (1).

42045311839 is an equidigital number, since it uses as much as digits as its factorization.

42045311839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 42045311839 in words is "forty-two billion, forty-five million, three hundred eleven thousand, eight hundred thirty-nine".