423430443240 has 128 divisors (see below), whose sum is σ = 1451958773760. Its totient is φ = 96770951424.

The previous prime is 423430443239. The next prime is 423430443253. The reversal of 423430443240 is 42344034324.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7015029 + ... + 7075131.

It is an arithmetic number, because the mean of its divisors is an integer number (11343427920).

Almost surely, 2^423430443240 is an apocalyptic number.

423430443240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423430443240 is an abundant number, since it is smaller than the sum of its proper divisors (1028528330520).

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

423430443240 is a wasteful number, since it uses less digits than its factorization.

423430443240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68511 (or 68507 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 33.

Adding to 423430443240 its reverse (42344034324), we get a palindrome (465774477564).

The spelling of 423430443240 in words is "four hundred twenty-three billion, four hundred thirty million, four hundred forty-three thousand, two hundred forty".