423221303442 has 96 divisors (see below), whose sum is σ = 1007936227584. Its totient is φ = 118061344800.

The previous prime is 423221303423. The next prime is 423221303443. The reversal of 423221303442 is 244303122324.

It is not an unprimeable number, because it can be changed into a prime (423221303443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42611217 + ... + 42621147.

It is an arithmetic number, because the mean of its divisors is an integer number (10499335704).

Almost surely, 2^423221303442 is an apocalyptic number.

423221303442 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 423221303442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (503968113792).

423221303442 is an abundant number, since it is smaller than the sum of its proper divisors (584714924142).

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

423221303442 is a wasteful number, since it uses less digits than its factorization.

423221303442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13364 (or 13357 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 423221303442 its reverse (244303122324), we get a palindrome (667524425766).

The spelling of 423221303442 in words is "four hundred twenty-three billion, two hundred twenty-one million, three hundred three thousand, four hundred forty-two".