2124404 has 6 divisors (see below), whose sum is σ = 3717714. Its totient is φ = 1062200.

The previous prime is 2124403. The next prime is 2124431. The reversal of 2124404 is 4044212.

It can be written as a sum of positive squares in only one way, i.e., 2102500 + 21904 = 1450^2 + 148^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265547 + ... + 265554.

It is an arithmetic number, because the mean of its divisors is an integer number (619619).

2^2124404 is an apocalyptic number.

It is an amenable number.

2124404 is a deficient number, since it is larger than the sum of its proper divisors (1593310).

2124404 is a wasteful number, since it uses less digits than its factorization.

2124404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531105 (or 531103 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2124404 is about 1457.5335330619. The cubic root of 2124404 is about 128.5520589280.

Adding to 2124404 its reverse (4044212), we get a palindrome (6168616).

The spelling of 2124404 in words is "two million, one hundred twenty-four thousand, four hundred four".