423534144 has 112 divisors (see below), whose sum is σ = 1275770880. Its totient is φ = 122749440.

The previous prime is 423534113. The next prime is 423534151. The reversal of 423534144 is 441435324.

It is a super-2 number, since 2×423534144² = 358762342267625472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44217 + ... + 52935.

Almost surely, 2^423534144 is an apocalyptic number.

423534144 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 423534144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (637885440).

423534144 is an abundant number, since it is smaller than the sum of its proper divisors (852236736).

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

423534144 is a wasteful number, since it uses less digits than its factorization.

423534144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8768 (or 8758 counting only the distinct ones).

The product of its digits is 23040, while the sum is 30.

The square root of 423534144 is about 20579.9451894314. The cubic root of 423534144 is about 750.9819103528.

Adding to 423534144 its reverse (441435324), we get a palindrome (864969468).

The spelling of 423534144 in words is "four hundred twenty-three million, five hundred thirty-four thousand, one hundred forty-four".