423432144 has 160 divisors (see below), whose sum is σ = 1272240000. Its totient is φ = 134701056.

The previous prime is 423432091. The next prime is 423432151. The reversal of 423432144 is 441234324.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 942832 + ... + 943280.

It is an arithmetic number, because the mean of its divisors is an integer number (7951500).

Almost surely, 2^423432144 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 423432144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636120000).

423432144 is an abundant number, since it is smaller than the sum of its proper divisors (848807856).

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

423432144 is a wasteful number, since it uses less digits than its factorization.

423432144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 550 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 423432144 is about 20577.4668994996. The cubic root of 423432144 is about 750.9216190273.

Adding to 423432144 its reverse (441234324), we get a palindrome (864666468).

The spelling of 423432144 in words is "four hundred twenty-three million, four hundred thirty-two thousand, one hundred forty-four".