423030240 has 144 divisors (see below), whose sum is σ = 1450376928. Its totient is φ = 112278528.

The previous prime is 423030233. The next prime is 423030241. The reversal of 423030240 is 42030324.

423030240 is a `hidden beast` number, since 423 + 0 + 3 + 0 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423030241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 378162 + ... + 379278.

It is an arithmetic number, because the mean of its divisors is an integer number (10072062).

Almost surely, 2^423030240 is an apocalyptic number.

423030240 is a gapful number since it is divisible by the number (40) 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 423030240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725188464).

423030240 is an abundant number, since it is smaller than the sum of its proper divisors (1027346688).

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

423030240 is a wasteful number, since it uses less digits than its factorization.

423030240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401 (or 1390 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 423030240 is about 20567.6989476217. The cubic root of 423030240 is about 750.6839627370.

Adding to 423030240 its reverse (42030324), we get a palindrome (465060564).

The spelling of 423030240 in words is "four hundred twenty-three million, thirty thousand, two hundred forty".