2120003423 has 4 divisors (see below), whose sum is σ = 2125343880. Its totient is φ = 2114662968.

The previous prime is 2120003419. The next prime is 2120003447. The reversal of 2120003423 is 3243000212.

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

It is a cyclic number.

It is not a de Polignac number, because 2120003423 - 2² = 2120003419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120003323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2669633 + ... + 2670426.

It is an arithmetic number, because the mean of its divisors is an integer number (531335970).

Almost surely, 2^2120003423 is an apocalyptic number.

2120003423 is a deficient number, since it is larger than the sum of its proper divisors (5340457).

2120003423 is an equidigital number, since it uses as much as digits as its factorization.

2120003423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5340456.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2120003423 is about 46043.4949042750. The cubic root of 2120003423 is about 1284.6323491106.

Adding to 2120003423 its reverse (3243000212), we get a palindrome (5363003635).

The spelling of 2120003423 in words is "two billion, one hundred twenty million, three thousand, four hundred twenty-three".