401003400140020 has 48 divisors (see below), whose sum is σ = 842810565441600. Its totient is φ = 160267391553024.

The previous prime is 401003400139957. The next prime is 401003400140047. The reversal of 401003400140020 is 20041004300104.

It is a self number, because there is not a number n which added to its sum of digits gives 401003400140020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377166007 + ... + 378227713.

It is an arithmetic number, because the mean of its divisors is an integer number (17558553446700).

Almost surely, 2^{401003400140020} is an apocalyptic number.

It is an amenable number.

401003400140020 is an abundant number, since it is smaller than the sum of its proper divisors (441807165301580).

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

401003400140020 is a wasteful number, since it uses less digits than its factorization.

401003400140020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077472 (or 1077470 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 401003400140020 its reverse (20041004300104), we get a palindrome (421044404440124).

The spelling of 401003400140020 in words is "four hundred one trillion, three billion, four hundred million, one hundred forty thousand, twenty".