2123404023 has 64 divisors (see below), whose sum is σ = 3340818432. Its totient is φ = 1187727360.

The previous prime is 2123404013. The next prime is 2123404037. The reversal of 2123404023 is 3204043212.

It is not a de Polignac number, because 2123404023 - 2¹⁶ = 2123338487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123404013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2585953 + ... + 2586773.

It is an arithmetic number, because the mean of its divisors is an integer number (52200288).

Almost surely, 2^2123404023 is an apocalyptic number.

2123404023 is a deficient number, since it is larger than the sum of its proper divisors (1217414409).

2123404023 is a wasteful number, since it uses less digits than its factorization.

2123404023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984.

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

The square root of 2123404023 is about 46080.4082338688. The cubic root of 2123404023 is about 1285.3188554022.

Adding to 2123404023 its reverse (3204043212), we get a palindrome (5327447235).

The spelling of 2123404023 in words is "two billion, one hundred twenty-three million, four hundred four thousand, twenty-three".