423321120 has 384 divisors, whose sum is σ = 1596672000. Its totient is φ = 104509440.

The previous prime is 423321109. The next prime is 423321133. The reversal of 423321120 is 21123324.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 423321093 and 423321102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3883626 + ... + 3883734.

It is an arithmetic number, because the mean of its divisors is an integer number (4158000).

Almost surely, 2^423321120 is an apocalyptic number.

423321120 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 423321120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798336000).

423321120 is an abundant number, since it is smaller than the sum of its proper divisors (1173350880).

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

423321120 is a wasteful number, since it uses less digits than its factorization.

423321120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 423321120 is about 20574.7690144993. The cubic root of 423321120 is about 750.8559826865.

Adding to 423321120 its reverse (21123324), we get a palindrome (444444444).

The spelling of 423321120 in words is "four hundred twenty-three million, three hundred twenty-one thousand, one hundred twenty".