404421502144123 has 2 divisors, whose sum is σ = 404421502144124. Its totient is φ = 404421502144122.

The previous prime is 404421502144067. The next prime is 404421502144129. The reversal of 404421502144123 is 321441205124404.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404421502144123 - 2¹⁷ = 404421502013051 is a prime.

It is not a weakly prime, because it can be changed into another prime (404421502144129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202210751072061 + 202210751072062.

It is an arithmetic number, because the mean of its divisors is an integer number (202210751072062).

Almost surely, 2^{404421502144123} is an apocalyptic number.

404421502144123 is a deficient number, since it is larger than the sum of its proper divisors (1).

404421502144123 is an equidigital number, since it uses as much as digits as its factorization.

404421502144123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122880, while the sum is 37.

Adding to 404421502144123 its reverse (321441205124404), we get a palindrome (725862707268527).

The spelling of 404421502144123 in words is "four hundred four trillion, four hundred twenty-one billion, five hundred two million, one hundred forty-four thousand, one hundred twenty-three".