42043340420 has 24 divisors (see below), whose sum is σ = 88302879000. Its totient is φ = 16815076352.

The previous prime is 42043340419. The next prime is 42043340461. The reversal of 42043340420 is 2404334024.

It can be written as a sum of positive squares in 4 ways, for example, as 2356325764 + 39687014656 = 48542^2 + 199216^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42043340420.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15566 + ... + 290394.

It is an arithmetic number, because the mean of its divisors is an integer number (3679286625).

Almost surely, 2^42043340420 is an apocalyptic number.

It is an amenable number.

42043340420 is an abundant number, since it is smaller than the sum of its proper divisors (46259538580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42043340420 is a wasteful number, since it uses less digits than its factorization.

42043340420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282487 (or 282485 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 42043340420 its reverse (2404334024), we get a palindrome (44447674444).

The spelling of 42043340420 in words is "forty-two billion, forty-three million, three hundred forty thousand, four hundred twenty".