401143232 has 56 divisors (see below), whose sum is σ = 912778464. Its totient is φ = 171343872.

The previous prime is 401143229. The next prime is 401143243. The reversal of 401143232 is 232341104.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149648 + ... + 152304.

Almost surely, 2^401143232 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 401143232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456389232).

401143232 is an abundant number, since it is smaller than the sum of its proper divisors (511635232).

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

401143232 is a wasteful number, since it uses less digits than its factorization.

401143232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013 (or 3003 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 401143232 is about 20028.5604075780. The cubic root of 401143232 is about 737.5075824941.

Adding to 401143232 its reverse (232341104), we get a palindrome (633484336).

The spelling of 401143232 in words is "four hundred one million, one hundred forty-three thousand, two hundred thirty-two".