401042144 has 24 divisors (see below), whose sum is σ = 800372160. Its totient is φ = 197773056.

The previous prime is 401042129. The next prime is 401042167. The reversal of 401042144 is 441240104.

It is a happy number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 83504 + ... + 88175.

It is an arithmetic number, because the mean of its divisors is an integer number (33348840).

Almost surely, 2^401042144 is an apocalyptic number.

It is an amenable number.

401042144 is a deficient number, since it is larger than the sum of its proper divisors (399330016).

401042144 is a wasteful number, since it uses less digits than its factorization.

401042144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171762 (or 171754 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 401042144 is about 20026.0366523184. The cubic root of 401042144 is about 737.4456267105.

Adding to 401042144 its reverse (441240104), we get a palindrome (842282248).

The spelling of 401042144 in words is "four hundred one million, forty-two thousand, one hundred forty-four".