42021243330 has 128 divisors (see below), whose sum is σ = 111203953920. Its totient is φ = 10077634560.

The previous prime is 42021243247. The next prime is 42021243337. The reversal of 42021243330 is 3334212024.

It is a self number, because there is not a number n which added to its sum of digits gives 42021243330.

It is not an unprimeable number, because it can be changed into a prime (42021243337) 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, 34641804 + ... + 34643016.

It is an arithmetic number, because the mean of its divisors is an integer number (868780890).

Almost surely, 2^42021243330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42021243330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55601976960).

42021243330 is an abundant number, since it is smaller than the sum of its proper divisors (69182710590).

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

42021243330 is a wasteful number, since it uses less digits than its factorization.

42021243330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 42021243330 its reverse (3334212024), we get a palindrome (45355455354).

The spelling of 42021243330 in words is "forty-two billion, twenty-one million, two hundred forty-three thousand, three hundred thirty".