423242028 has 108 divisors (see below), whose sum is σ = 1192968504. Its totient is φ = 126498240.

The previous prime is 423242023. The next prime is 423242033. The reversal of 423242028 is 820242324.

423242028 is a `hidden beast` number, since 4 + 232 + 420 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (423242023) and next prime (423242033).

It is a junction number, because it is equal to n+sod(n) for n = 423241992 and 423242010.

It is not an unprimeable number, because it can be changed into a prime (423242023) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 5797800 + ... + 5797872.

Almost surely, 2^423242028 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 423242028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596484252).

423242028 is an abundant number, since it is smaller than the sum of its proper divisors (769726476).

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

423242028 is an equidigital number, since it uses as much as digits as its factorization.

423242028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 423242028 is about 20572.8468618225. The cubic root of 423242028 is about 750.8092172426.

The spelling of 423242028 in words is "four hundred twenty-three million, two hundred forty-two thousand, twenty-eight".