421404200423441 has 16 divisors (see below), whose sum is σ = 443798523840000. Its totient is φ = 399031427022336.

The previous prime is 421404200423417. The next prime is 421404200423471. The reversal of 421404200423441 is 144324002404124.

It is a cyclic number.

It is not a de Polignac number, because 421404200423441 - 2³⁴ = 421387020554257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421404200423411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444275795 + ... + 445223303.

It is an arithmetic number, because the mean of its divisors is an integer number (27737407740000).

Almost surely, 2^{421404200423441} is an apocalyptic number.

It is an amenable number.

421404200423441 is a deficient number, since it is larger than the sum of its proper divisors (22394323416559).

421404200423441 is a wasteful number, since it uses less digits than its factorization.

421404200423441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958856.

The product of its (nonzero) digits is 98304, while the sum is 35.

Adding to 421404200423441 its reverse (144324002404124), we get a palindrome (565728202827565).

The spelling of 421404200423441 in words is "four hundred twenty-one trillion, four hundred four billion, two hundred million, four hundred twenty-three thousand, four hundred forty-one".