423201440 has 96 divisors (see below), whose sum is σ = 1067411520. Its totient is φ = 158091264.

The previous prime is 423201439. The next prime is 423201461. The reversal of 423201440 is 44102324.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 220967 + ... + 222873.

It is an arithmetic number, because the mean of its divisors is an integer number (11118870).

Almost surely, 2^423201440 is an apocalyptic number.

423201440 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 423201440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (533705760).

423201440 is an abundant number, since it is smaller than the sum of its proper divisors (644210080).

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

423201440 is a wasteful number, since it uses less digits than its factorization.

423201440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014 (or 2006 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 423201440 is about 20571.8603922932. The cubic root of 423201440 is about 750.7852161458.

Adding to 423201440 its reverse (44102324), we get a palindrome (467303764).

The spelling of 423201440 in words is "four hundred twenty-three million, two hundred one thousand, four hundred forty".