400421130434403 has 12 divisors (see below), whose sum is σ = 578122815539160. Its totient is φ = 246413003343936.

The previous prime is 400421130434393. The next prime is 400421130434459. The reversal of 400421130434403 is 304434031124004.

It is not a de Polignac number, because 400421130434403 - 2⁸ = 400421130434147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400421130436403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 394892633058 + ... + 394892634071.

It is an arithmetic number, because the mean of its divisors is an integer number (48176901294930).

Almost surely, 2^{400421130434403} is an apocalyptic number.

400421130434403 is a deficient number, since it is larger than the sum of its proper divisors (177701685104757).

400421130434403 is a wasteful number, since it uses less digits than its factorization.

400421130434403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789785267158 (or 789785267145 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 400421130434403 its reverse (304434031124004), we get a palindrome (704855161558407).

The spelling of 400421130434403 in words is "four hundred trillion, four hundred twenty-one billion, one hundred thirty million, four hundred thirty-four thousand, four hundred three".