423120044440 has 32 divisors (see below), whose sum is σ = 984848382000. Its totient is φ = 163411878784.

The previous prime is 423120044423. The next prime is 423120044453. The reversal of 423120044440 is 44440021324.

It is a junction number, because it is equal to n+sod(n) for n = 423120044399 and 423120044408.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 182378170 + ... + 182380489.

Almost surely, 2^423120044440 is an apocalyptic number.

423120044440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423120044440 is an abundant number, since it is smaller than the sum of its proper divisors (561728337560).

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

423120044440 is a wasteful number, since it uses less digits than its factorization.

423120044440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364758699 (or 364758695 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 423120044440 its reverse (44440021324), we get a palindrome (467560065764).

The spelling of 423120044440 in words is "four hundred twenty-three billion, one hundred twenty million, forty-four thousand, four hundred forty".