42449316828 has 12 divisors (see below), whose sum is σ = 99048405960. Its totient is φ = 14149772272.

The previous prime is 42449316781. The next prime is 42449316839. The reversal of 42449316828 is 82861394424.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1768721523 + ... + 1768721546.

It is an arithmetic number, because the mean of its divisors is an integer number (8254033830).

Almost surely, 2^42449316828 is an apocalyptic number.

It is an amenable number.

42449316828 is an abundant number, since it is smaller than the sum of its proper divisors (56599089132).

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

42449316828 is a wasteful number, since it uses less digits than its factorization.

42449316828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3537443076 (or 3537443074 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 51.

The spelling of 42449316828 in words is "forty-two billion, four hundred forty-nine million, three hundred sixteen thousand, eight hundred twenty-eight".