401001132 has 24 divisors (see below), whose sum is σ = 1069336576. Its totient is φ = 114571728.

The previous prime is 401001121. The next prime is 401001193. The reversal of 401001132 is 231100104.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2386828 + ... + 2386995.

Almost surely, 2^401001132 is an apocalyptic number.

401001132 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

401001132 is an abundant number, since it is smaller than the sum of its proper divisors (668335444).

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

401001132 is a wasteful number, since it uses less digits than its factorization.

401001132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4773837 (or 4773835 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 401001132 is about 20025.0126591720. The cubic root of 401001132 is about 737.4204879136.

Adding to 401001132 its reverse (231100104), we get a palindrome (632101236).

The spelling of 401001132 in words is "four hundred one million, one thousand, one hundred thirty-two".