42440422648 has 64 divisors (see below), whose sum is σ = 87790469760. Its totient is φ = 19114862976.

The previous prime is 42440422643. The next prime is 42440422657. The reversal of 42440422648 is 84622404424.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42440422648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42440422643) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 717115 + ... + 774037.

It is an arithmetic number, because the mean of its divisors is an integer number (1371726090).

Almost surely, 2^42440422648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42440422648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43895234880).

42440422648 is an abundant number, since it is smaller than the sum of its proper divisors (45350047112).

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

42440422648 is a wasteful number, since it uses less digits than its factorization.

42440422648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57116 (or 57112 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 40.

The spelling of 42440422648 in words is "forty-two billion, four hundred forty million, four hundred twenty-two thousand, six hundred forty-eight".