42320424440 has 128 divisors (see below), whose sum is σ = 114823526400. Its totient is φ = 13713546240.

The previous prime is 42320424439. The next prime is 42320424451. The reversal of 42320424440 is 4442402324.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2283692 + ... + 2302148.

It is an arithmetic number, because the mean of its divisors is an integer number (897058800).

Almost surely, 2^42320424440 is an apocalyptic number.

42320424440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42320424440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57411763200).

42320424440 is an abundant number, since it is smaller than the sum of its proper divisors (72503101960).

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

42320424440 is a wasteful number, since it uses less digits than its factorization.

42320424440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18925 (or 18921 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 29.

Adding to 42320424440 its reverse (4442402324), we get a palindrome (46762826764).

The spelling of 42320424440 in words is "forty-two billion, three hundred twenty million, four hundred twenty-four thousand, four hundred forty".