404401421210 has 16 divisors (see below), whose sum is σ = 727936604136. Its totient is φ = 161757447168.

The previous prime is 404401421189. The next prime is 404401421231. The reversal of 404401421210 is 12124104404.

It is an interprime number because it is at equal distance from previous prime (404401421189) and next prime (404401421231).

It can be written as a sum of positive squares in 4 ways, for example, as 392744116249 + 11657304961 = 626693^2 + 107969^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195914 + ... + 920426.

Almost surely, 2^404401421210 is an apocalyptic number.

404401421210 is a deficient number, since it is larger than the sum of its proper divisors (323535182926).

404401421210 is a wasteful number, since it uses less digits than its factorization.

404401421210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780337.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 404401421210 its reverse (12124104404), we get a palindrome (416525525614).

The spelling of 404401421210 in words is "four hundred four billion, four hundred one million, four hundred twenty-one thousand, two hundred ten".