423111872 has 56 divisors (see below), whose sum is σ = 867637584. Its totient is φ = 204567552.

The previous prime is 423111863. The next prime is 423111877. The reversal of 423111872 is 278111324.

It is not an unprimeable number, because it can be changed into a prime (423111877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466043 + ... + 466949.

Almost surely, 2^423111872 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 423111872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433818792).

423111872 is an abundant number, since it is smaller than the sum of its proper divisors (444525712).

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

423111872 is a wasteful number, since it uses less digits than its factorization.

423111872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153 (or 1143 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 423111872 is about 20569.6833227933. The cubic root of 423111872 is about 750.7322460402.

It can be divided in two parts, 423 and 111872, that multiplied together give a triangular number (47321856 = T₉₇₂₈).

The spelling of 423111872 in words is "four hundred twenty-three million, one hundred eleven thousand, eight hundred seventy-two".