2162421005423 has 12 divisors (see below), whose sum is σ = 2515501237392. Its totient is φ = 1853480210400.

The previous prime is 2162421005383. The next prime is 2162421005429. The reversal of 2162421005423 is 3245001242612.

It is not a de Polignac number, because 2162421005423 - 2⁸ = 2162421005167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2162421005423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162421005429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4420211 + ... + 4884987.

It is an arithmetic number, because the mean of its divisors is an integer number (209625103116).

Almost surely, 2^{2162421005423} is an apocalyptic number.

2162421005423 is a deficient number, since it is larger than the sum of its proper divisors (353080231969).

2162421005423 is an equidigital number, since it uses as much as digits as its factorization.

2162421005423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559742 (or 559735 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 2162421005423 in words is "two trillion, one hundred sixty-two billion, four hundred twenty-one million, five thousand, four hundred twenty-three".