2142804 has 12 divisors (see below), whose sum is σ = 4999904. Its totient is φ = 714264.

The previous prime is 2142793. The next prime is 2142823. The reversal of 2142804 is 4082412.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89272 + ... + 89295.

2^2142804 is an apocalyptic number.

It is an amenable number.

2142804 is an abundant number, since it is smaller than the sum of its proper divisors (2857100).

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

2142804 is a wasteful number, since it uses less digits than its factorization.

2142804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178574 (or 178572 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 2142804 is about 1463.8319575689. The cubic root of 2142804 is about 128.9221331650.

The spelling of 2142804 in words is "two million, one hundred forty-two thousand, eight hundred four".