10440300421 has 2 divisors, whose sum is σ = 10440300422. Its totient is φ = 10440300420.

The previous prime is 10440300401. The next prime is 10440300427. The reversal of 10440300421 is 12400304401.

10440300421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8758152225 + 1682148196 = 93585^2 + 41014^2 .

It is a cyclic number.

It is not a de Polignac number, because 10440300421 - 2¹⁷ = 10440169349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10440300427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5220150210 + 5220150211.

It is an arithmetic number, because the mean of its divisors is an integer number (5220150211).

Almost surely, 2^10440300421 is an apocalyptic number.

It is an amenable number.

10440300421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10440300421 is an equidigital number, since it uses as much as digits as its factorization.

10440300421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 10440300421 its reverse (12400304401), we get a palindrome (22840604822).

The spelling of 10440300421 in words is "ten billion, four hundred forty million, three hundred thousand, four hundred twenty-one".