423421312 has 64 divisors (see below), whose sum is σ = 922112640. Its totient is φ = 192798720.

The previous prime is 423421267. The next prime is 423421331. The reversal of 423421312 is 213124324.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64318 + ... + 70594.

It is an arithmetic number, because the mean of its divisors is an integer number (14408010).

Almost surely, 2^423421312 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 423421312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461056320).

423421312 is an abundant number, since it is smaller than the sum of its proper divisors (498691328).

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

423421312 is a wasteful number, since it uses less digits than its factorization.

423421312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6339 (or 6327 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 423421312 is about 20577.2036972957. The cubic root of 423421312 is about 750.9152157562.

Adding to 423421312 its reverse (213124324), we get a palindrome (636545636).

The spelling of 423421312 in words is "four hundred twenty-three million, four hundred twenty-one thousand, three hundred twelve".