10105342421 has 2 divisors, whose sum is σ = 10105342422. Its totient is φ = 10105342420.

The previous prime is 10105342381. The next prime is 10105342427. The reversal of 10105342421 is 12424350101.

10105342421 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., 9137448100 + 967894321 = 95590^2 + 31111^2 .

It is an emirp because it is prime and its reverse (12424350101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10105342421 - 2¹⁸ = 10105080277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10105342427) 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, 5052671210 + 5052671211.

It is an arithmetic number, because the mean of its divisors is an integer number (5052671211).

Almost surely, 2^10105342421 is an apocalyptic number.

It is an amenable number.

10105342421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10105342421 is an equidigital number, since it uses as much as digits as its factorization.

10105342421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 10105342421 its reverse (12424350101), we get a palindrome (22529692522).

The spelling of 10105342421 in words is "ten billion, one hundred five million, three hundred forty-two thousand, four hundred twenty-one".