401045128 has 32 divisors (see below), whose sum is σ = 825779520. Its totient is φ = 181080000.

The previous prime is 401045119. The next prime is 401045129. The reversal of 401045128 is 821540104.

It is not an unprimeable number, because it can be changed into a prime (401045129) by changing a digit.

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, 1803 + ... + 28378.

It is an arithmetic number, because the mean of its divisors is an integer number (25805610).

Almost surely, 2^401045128 is an apocalyptic number.

It is an amenable number.

401045128 is an abundant number, since it is smaller than the sum of its proper divisors (424734392).

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

401045128 is a wasteful number, since it uses less digits than its factorization.

401045128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30349 (or 30345 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 401045128 is about 20026.1111551894. Note that the first 4 decimals coincide. The cubic root of 401045128 is about 737.4474557222.

The spelling of 401045128 in words is "four hundred one million, forty-five thousand, one hundred twenty-eight".