403423120 has 80 divisors (see below), whose sum is σ = 962795520. Its totient is φ = 157151232.

The previous prime is 403423103. The next prime is 403423123. The reversal of 403423120 is 21324304.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (403423123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 599104 + ... + 599776.

It is an arithmetic number, because the mean of its divisors is an integer number (12034944).

Almost surely, 2^403423120 is an apocalyptic number.

403423120 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 403423120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481397760).

403423120 is an abundant number, since it is smaller than the sum of its proper divisors (559372400).

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

403423120 is a wasteful number, since it uses less digits than its factorization.

403423120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872 (or 866 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 403423120 is about 20085.3956894058. The cubic root of 403423120 is about 738.9021460887.

Adding to 403423120 its reverse (21324304), we get a palindrome (424747424).

The spelling of 403423120 in words is "four hundred three million, four hundred twenty-three thousand, one hundred twenty".