2123004423 has 4 divisors (see below), whose sum is σ = 2830672568. Its totient is φ = 1415336280.

The previous prime is 2123004419. The next prime is 2123004451. The reversal of 2123004423 is 3244003212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2123004423 - 2² = 2123004419 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 2123004423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123004413) 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 in 3 ways as a sum of consecutive naturals, for example, 353834068 + ... + 353834073.

It is an arithmetic number, because the mean of its divisors is an integer number (707668142).

Almost surely, 2^2123004423 is an apocalyptic number.

2123004423 is a deficient number, since it is larger than the sum of its proper divisors (707668145).

2123004423 is an equidigital number, since it uses as much as digits as its factorization.

2123004423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707668144.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2123004423 is about 46076.0721307709. The cubic root of 2123004423 is about 1285.2382229788.

Adding to 2123004423 its reverse (3244003212), we get a palindrome (5367007635).

The spelling of 2123004423 in words is "two billion, one hundred twenty-three million, four thousand, four hundred twenty-three".