2129804 has 6 divisors (see below), whose sum is σ = 3727164. Its totient is φ = 1064900.

The previous prime is 2129797. The next prime is 2129807. The reversal of 2129804 is 4089212.

2129804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2129807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266222 + ... + 266229.

It is an arithmetic number, because the mean of its divisors is an integer number (621194).

2^2129804 is an apocalyptic number.

It is an amenable number.

2129804 is a deficient number, since it is larger than the sum of its proper divisors (1597360).

2129804 is a wasteful number, since it uses less digits than its factorization.

2129804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532455 (or 532453 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2129804 is about 1459.3848018943. The cubic root of 2129804 is about 128.6608884743.

The spelling of 2129804 in words is "two million, one hundred twenty-nine thousand, eight hundred four".