2123404 has 6 divisors (see below), whose sum is σ = 3715964. Its totient is φ = 1061700.

The previous prime is 2123377. The next prime is 2123411. The reversal of 2123404 is 4043212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265422 + ... + 265429.

2^2123404 is an apocalyptic number.

It is an amenable number.

2123404 is a deficient number, since it is larger than the sum of its proper divisors (1592560).

2123404 is a wasteful number, since it uses less digits than its factorization.

2123404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530855 (or 530853 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2123404 is about 1457.1904474021. The cubic root of 2123404 is about 128.5318850761.

Subtracting from 2123404 its product of nonzero digits (192), we obtain a palindrome (2123212).

Adding to 2123404 its reverse (4043212), we get a palindrome (6166616).

The spelling of 2123404 in words is "two million, one hundred twenty-three thousand, four hundred four".