404421502144243 has 2 divisors, whose sum is σ = 404421502144244. Its totient is φ = 404421502144242.

The previous prime is 404421502144189. The next prime is 404421502144259. The reversal of 404421502144243 is 342441205124404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404421502144243 - 2²⁹ = 404420965273331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404421502144196 and 404421502144205.

It is not a weakly prime, because it can be changed into another prime (404421502144273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202210751072121 + 202210751072122.

It is an arithmetic number, because the mean of its divisors is an integer number (202210751072122).

Almost surely, 2^{404421502144243} is an apocalyptic number.

404421502144243 is a deficient number, since it is larger than the sum of its proper divisors (1).

404421502144243 is an equidigital number, since it uses as much as digits as its factorization.

404421502144243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 491520, while the sum is 40.

Adding to 404421502144243 its reverse (342441205124404), we get a palindrome (746862707268647).

The spelling of 404421502144243 in words is "four hundred four trillion, four hundred twenty-one billion, five hundred two million, one hundred forty-four thousand, two hundred forty-three".