423042444 has 72 divisors (see below), whose sum is σ = 1170296400. Its totient is φ = 127785600.

The previous prime is 423042419. The next prime is 423042457. The reversal of 423042444 is 444240324.

It is a happy number.

423042444 is a `hidden beast` number, since 4 + 230 + 424 + 4 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136674 + ... + 139734.

Almost surely, 2^423042444 is an apocalyptic number.

423042444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423042444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585148200).

423042444 is an abundant number, since it is smaller than the sum of its proper divisors (747253956).

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

423042444 is a wasteful number, since it uses less digits than its factorization.

423042444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3431 (or 3426 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

The square root of 423042444 is about 20567.9956242702. The cubic root of 423042444 is about 750.6911814952.

Adding to 423042444 its reverse (444240324), we get a palindrome (867282768).

The spelling of 423042444 in words is "four hundred twenty-three million, forty-two thousand, four hundred forty-four".