2123400304 has 20 divisors (see below), whose sum is σ = 4246801600. Its totient is φ = 1027451520.

The previous prime is 2123400287. The next prime is 2123400313. The reversal of 2123400304 is 4030043212.

2123400304 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2140029 + ... + 2141020.

It is an arithmetic number, because the mean of its divisors is an integer number (212340080).

Almost surely, 2^2123400304 is an apocalyptic number.

It is an amenable number.

2123400304 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123400304 is a wasteful number, since it uses less digits than its factorization.

2123400304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4281088 (or 4281082 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2123400304 is about 46080.3678804760. The cubic root of 2123400304 is about 1285.3181050184.

Adding to 2123400304 its reverse (4030043212), we get a palindrome (6153443516).

The spelling of 2123400304 in words is "two billion, one hundred twenty-three million, four hundred thousand, three hundred four".