423123430240 has 192 divisors, whose sum is σ = 1193149440000. Its totient is φ = 138641817600.

The previous prime is 423123430211. The next prime is 423123430253. The reversal of 423123430240 is 42034321324.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 423123430199 and 423123430208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32167665 + ... + 32180815.

It is an arithmetic number, because the mean of its divisors is an integer number (6214320000).

Almost surely, 2^423123430240 is an apocalyptic number.

423123430240 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 423123430240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596574720000).

423123430240 is an abundant number, since it is smaller than the sum of its proper divisors (770026009760).

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

423123430240 is a wasteful number, since it uses less digits than its factorization.

423123430240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14445 (or 14437 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 423123430240 its reverse (42034321324), we get a palindrome (465157751564).

The spelling of 423123430240 in words is "four hundred twenty-three billion, one hundred twenty-three million, four hundred thirty thousand, two hundred forty".