2142904 has 8 divisors (see below), whose sum is σ = 4017960. Its totient is φ = 1071448.

The previous prime is 2142883. The next prime is 2142911. The reversal of 2142904 is 4092412.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133924 + ... + 133939.

It is an arithmetic number, because the mean of its divisors is an integer number (502245).

2^2142904 is an apocalyptic number.

It is an amenable number.

2142904 is a deficient number, since it is larger than the sum of its proper divisors (1875056).

2142904 is a wasteful number, since it uses less digits than its factorization.

2142904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267869 (or 267865 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2142904 is about 1463.8661140965. The cubic root of 2142904 is about 128.9241386390.

The spelling of 2142904 in words is "two million, one hundred forty-two thousand, nine hundred four".