42400443030 has 128 divisors (see below), whose sum is σ = 113154471936. Its totient is φ = 10081497600.

The previous prime is 42400442999. The next prime is 42400443031. The reversal of 42400443030 is 3034400424.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42400443031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7505667 + ... + 7511313.

It is an arithmetic number, because the mean of its divisors is an integer number (884019312).

Almost surely, 2^42400443030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42400443030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56577235968).

42400443030 is an abundant number, since it is smaller than the sum of its proper divisors (70754028906).

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

42400443030 is a wasteful number, since it uses less digits than its factorization.

42400443030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6102.

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 42400443030 its reverse (3034400424), we get a palindrome (45434843454).

The spelling of 42400443030 in words is "forty-two billion, four hundred million, four hundred forty-three thousand, thirty".