404101334131421 has 4 divisors (see below), whose sum is σ = 427872000845052. Its totient is φ = 380330667417792.

The previous prime is 404101334131351. The next prime is 404101334131441. The reversal of 404101334131421 is 124131433101404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107856823951396 + 296244510180025 = 10385414^2 + 17211755^2 .

It is a cyclic number.

It is not a de Polignac number, because 404101334131421 - 2³⁰ = 404100260389597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404101334131441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11885333356790 + ... + 11885333356823.

It is an arithmetic number, because the mean of its divisors is an integer number (106968000211263).

Almost surely, 2^{404101334131421} is an apocalyptic number.

It is an amenable number.

404101334131421 is a deficient number, since it is larger than the sum of its proper divisors (23770666713631).

404101334131421 is a wasteful number, since it uses less digits than its factorization.

404101334131421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23770666713630.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 404101334131421 its reverse (124131433101404), we get a palindrome (528232767232825).

The spelling of 404101334131421 in words is "four hundred four trillion, one hundred one billion, three hundred thirty-four million, one hundred thirty-one thousand, four hundred twenty-one".