10421003123 has 2 divisors, whose sum is σ = 10421003124. Its totient is φ = 10421003122.

The previous prime is 10421003113. The next prime is 10421003167. The reversal of 10421003123 is 32130012401.

It is a weak prime.

It is an emirp because it is prime and its reverse (32130012401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10421003123 - 2²⁴ = 10404225907 is a prime.

It is not a weakly prime, because it can be changed into another prime (10421003113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5210501561 + 5210501562.

It is an arithmetic number, because the mean of its divisors is an integer number (5210501562).

Almost surely, 2^10421003123 is an apocalyptic number.

10421003123 is a deficient number, since it is larger than the sum of its proper divisors (1).

10421003123 is an equidigital number, since it uses as much as digits as its factorization.

10421003123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 10421003123 its reverse (32130012401), we get a palindrome (42551015524).

The spelling of 10421003123 in words is "ten billion, four hundred twenty-one million, three thousand, one hundred twenty-three".