421403171398 has 12 divisors (see below), whose sum is σ = 694792832580. Its totient is φ = 191546895980.

The previous prime is 421403171393. The next prime is 421403171417. The reversal of 421403171398 is 893171304124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421403171393) 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 5 ways as a sum of consecutive naturals, for example, 870667468 + ... + 870667951.

It is an arithmetic number, because the mean of its divisors is an integer number (57899402715).

Almost surely, 2^421403171398 is an apocalyptic number.

421403171398 is a deficient number, since it is larger than the sum of its proper divisors (273389661182).

421403171398 is a wasteful number, since it uses less digits than its factorization.

421403171398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741335443 (or 1741335432 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 421403171398 in words is "four hundred twenty-one billion, four hundred three million, one hundred seventy-one thousand, three hundred ninety-eight".