423120134220 has 144 divisors (see below), whose sum is σ = 1459231290720. Its totient is φ = 91024152576.

The previous prime is 423120134147. The next prime is 423120134243. The reversal of 423120134220 is 22431021324.

It is a happy 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 47 ways as a sum of consecutive naturals, for example, 4182915 + ... + 4282874.

It is an arithmetic number, because the mean of its divisors is an integer number (10133550630).

Almost surely, 2^423120134220 is an apocalyptic number.

It is an amenable number.

423120134220 is an abundant number, since it is smaller than the sum of its proper divisors (1036111156500).

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

423120134220 is a wasteful number, since it uses less digits than its factorization.

423120134220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8465832 (or 8465823 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 423120134220 its reverse (22431021324), we get a palindrome (445551155544).

The spelling of 423120134220 in words is "four hundred twenty-three billion, one hundred twenty million, one hundred thirty-four thousand, two hundred twenty".