2123004404 has 36 divisors (see below), whose sum is σ = 3953119884. Its totient is φ = 997426176.

The previous prime is 2123004347. The next prime is 2123004413. The reversal of 2123004404 is 4044003212.

It can be written as a sum of positive squares in 6 ways, for example, as 111302500 + 2011701904 = 10550^2 + 44852^2 .

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 984992 + ... + 987144.

Almost surely, 2^2123004404 is an apocalyptic number.

It is an amenable number.

2123004404 is a deficient number, since it is larger than the sum of its proper divisors (1830115480).

2123004404 is a wasteful number, since it uses less digits than its factorization.

2123004404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044 (or 3025 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2123004404 is about 46076.0719245901. The cubic root of 2123004404 is about 1285.2382191447.

Adding to 2123004404 its reverse (4044003212), we get a palindrome (6167007616).

The spelling of 2123004404 in words is "two billion, one hundred twenty-three million, four thousand, four hundred four".