423334140 has 192 divisors, whose sum is σ = 1286799360. Its totient is φ = 103783680.

The previous prime is 423334139. The next prime is 423334147. The reversal of 423334140 is 41433324.

It is a self number, because there is not a number n which added to its sum of digits gives 423334140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423334147) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5358621 + ... + 5358699.

It is an arithmetic number, because the mean of its divisors is an integer number (6702080).

Almost surely, 2^423334140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423334140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (643399680).

423334140 is an abundant number, since it is smaller than the sum of its proper divisors (863465220).

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

423334140 is a wasteful number, since it uses less digits than its factorization.

423334140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 423334140 is about 20575.0854190207. The cubic root of 423334140 is about 750.8636805816.

Adding to 423334140 its reverse (41433324), we get a palindrome (464767464).

The spelling of 423334140 in words is "four hundred twenty-three million, three hundred thirty-four thousand, one hundred forty".