423542784 has 120 divisors (see below), whose sum is σ = 1291806208. Its totient is φ = 120913920.

The previous prime is 423542773. The next prime is 423542797. The reversal of 423542784 is 487245324.

It is a happy 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, 343449 + ... + 344679.

Almost surely, 2^423542784 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 423542784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (645903104).

423542784 is an abundant number, since it is smaller than the sum of its proper divisors (868263424).

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

423542784 is an equidigital number, since it uses as much as digits as its factorization.

423542784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269 (or 1243 counting only the distinct ones).

The product of its digits is 215040, while the sum is 39.

The square root of 423542784 is about 20580.1551014564. The cubic root of 423542784 is about 750.9870169381.

The spelling of 423542784 in words is "four hundred twenty-three million, five hundred forty-two thousand, seven hundred eighty-four".