401401012 has 48 divisors (see below), whose sum is σ = 746181072. Its totient is φ = 188697600.

The previous prime is 401400949. The next prime is 401401019. The reversal of 401401012 is 210104104.

It can be written as a sum of positive squares in 8 ways, for example, as 120033936 + 281367076 = 10956^2 + 16774^2 .

It is a super-2 number, since 2×401401012² = 322245544869248288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401400983 and 401401001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401401019) 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 15 ways as a sum of consecutive naturals, for example, 572262 + ... + 572962.

It is an arithmetic number, because the mean of its divisors is an integer number (15545439).

Almost surely, 2^401401012 is an apocalyptic number.

It is an amenable number.

401401012 is a deficient number, since it is larger than the sum of its proper divisors (344780060).

401401012 is a wasteful number, since it uses less digits than its factorization.

401401012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868 (or 866 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 401401012 is about 20034.9946843018. The cubic root of 401401012 is about 737.6655260752.

Adding to 401401012 its reverse (210104104), we get a palindrome (611505116).

The spelling of 401401012 in words is "four hundred one million, four hundred one thousand, twelve".