404021420553241 has 4 divisors (see below), whose sum is σ = 412617620990592. Its totient is φ = 395425220115892.

The previous prime is 404021420553229. The next prime is 404021420553269. The reversal of 404021420553241 is 142355024120404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404021420553241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404021420553241.

It is not an unprimeable number, because it can be changed into a prime (404021420551241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4298100218605 + ... + 4298100218698.

It is an arithmetic number, because the mean of its divisors is an integer number (103154405247648).

Almost surely, 2^{404021420553241} is an apocalyptic number.

It is an amenable number.

404021420553241 is a deficient number, since it is larger than the sum of its proper divisors (8596200437351).

404021420553241 is an equidigital number, since it uses as much as digits as its factorization.

404021420553241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8596200437350.

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 404021420553241 its reverse (142355024120404), we get a palindrome (546376444673645).

The spelling of 404021420553241 in words is "four hundred four trillion, twenty-one billion, four hundred twenty million, five hundred fifty-three thousand, two hundred forty-one".