423145424 has 40 divisors (see below), whose sum is σ = 891526272. Its totient is φ = 193392000.

The previous prime is 423145397. The next prime is 423145433. The reversal of 423145424 is 424541324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11549 + ... + 31299.

Almost surely, 2^423145424 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 423145424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (445763136).

423145424 is an abundant number, since it is smaller than the sum of its proper divisors (468380848).

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

423145424 is a wasteful number, since it uses less digits than its factorization.

423145424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19875 (or 19869 counting only the distinct ones).

The product of its digits is 15360, while the sum is 29.

The square root of 423145424 is about 20570.4988758173. The cubic root of 423145424 is about 750.7520894151.

Adding to 423145424 its reverse (424541324), we get a palindrome (847686748).

The spelling of 423145424 in words is "four hundred twenty-three million, one hundred forty-five thousand, four hundred twenty-four".