42840075819 has 16 divisors (see below), whose sum is σ = 60028170752. Its totient is φ = 27141918048.

The previous prime is 42840075791. The next prime is 42840075821. The reversal of 42840075819 is 91857004824.

It is a happy number.

It is not a de Polignac number, because 42840075819 - 2⁵ = 42840075787 is a prime.

It is a super-2 number, since 2×42840075819² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42840075829) 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 in 15 ways as a sum of consecutive naturals, for example, 4482979 + ... + 4492524.

It is an arithmetic number, because the mean of its divisors is an integer number (3751760672).

Almost surely, 2^42840075819 is an apocalyptic number.

42840075819 is a deficient number, since it is larger than the sum of its proper divisors (17188094933).

42840075819 is a wasteful number, since it uses less digits than its factorization.

42840075819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8975586.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 42840075819 in words is "forty-two billion, eight hundred forty million, seventy-five thousand, eight hundred nineteen".