423012432 has 80 divisors (see below), whose sum is σ = 1110732480. Its totient is φ = 138710016.

The previous prime is 423012431. The next prime is 423012439. The reversal of 423012432 is 234210324.

It is a junction number, because it is equal to n+sod(n) for n = 423012399 and 423012408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423012431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1218883 + ... + 1219229.

It is an arithmetic number, because the mean of its divisors is an integer number (13884156).

Almost surely, 2^423012432 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 423012432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (555366240).

423012432 is an abundant number, since it is smaller than the sum of its proper divisors (687720048).

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

423012432 is a wasteful number, since it uses less digits than its factorization.

423012432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 423012432 is about 20567.2660312449. The cubic root of 423012432 is about 750.6734289214.

Adding to 423012432 its reverse (234210324), we get a palindrome (657222756).

The spelling of 423012432 in words is "four hundred twenty-three million, twelve thousand, four hundred thirty-two".