42807281839 has 16 divisors (see below), whose sum is σ = 50286837312. Its totient is φ = 35681038848.

The previous prime is 42807281837. The next prime is 42807281849. The reversal of 42807281839 is 93818270824.

It is a happy number.

It is not a de Polignac number, because 42807281839 - 2¹ = 42807281837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42807281837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468624 + ... + 552469.

It is an arithmetic number, because the mean of its divisors is an integer number (3142927332).

Almost surely, 2^42807281839 is an apocalyptic number.

42807281839 is a deficient number, since it is larger than the sum of its proper divisors (7479555473).

42807281839 is a wasteful number, since it uses less digits than its factorization.

42807281839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021266.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 42807281839 in words is "forty-two billion, eight hundred seven million, two hundred eighty-one thousand, eight hundred thirty-nine".