42738009490 has 48 divisors (see below), whose sum is σ = 84588255360. Its totient is φ = 15535476000.

The previous prime is 42738009481. The next prime is 42738009529. The reversal of 42738009490 is 9490083724.

It is a happy number.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 42738009490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4897351 + ... + 4906069.

It is an arithmetic number, because the mean of its divisors is an integer number (1762255320).

Almost surely, 2^42738009490 is an apocalyptic number.

42738009490 is a deficient number, since it is larger than the sum of its proper divisors (41850245870).

42738009490 is a wasteful number, since it uses less digits than its factorization.

42738009490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12799 (or 12788 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 42738009490 in words is "forty-two billion, seven hundred thirty-eight million, nine thousand, four hundred ninety".