423341223440 has 80 divisors (see below), whose sum is σ = 998045763840. Its totient is φ = 166976578560.

The previous prime is 423341223353. The next prime is 423341223457. The reversal of 423341223440 is 44322143324.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 423341223397 and 423341223406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2532035 + ... + 2694045.

It is an arithmetic number, because the mean of its divisors is an integer number (12475572048).

Almost surely, 2^423341223440 is an apocalyptic number.

423341223440 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 423341223440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499022881920).

423341223440 is an abundant number, since it is smaller than the sum of its proper divisors (574704540400).

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

423341223440 is a wasteful number, since it uses less digits than its factorization.

423341223440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162480 (or 162474 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 423341223440 its reverse (44322143324), we get a palindrome (467663366764).

The spelling of 423341223440 in words is "four hundred twenty-three billion, three hundred forty-one million, two hundred twenty-three thousand, four hundred forty".