2209942 has 16 divisors (see below), whose sum is σ = 3877632. Its totient is φ = 924840.

The previous prime is 2209939. The next prime is 2209957. The reversal of 2209942 is 2499022.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2209942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1234 + ... + 2437.

It is an arithmetic number, because the mean of its divisors is an integer number (242352).

2^2209942 is an apocalyptic number.

2209942 is a deficient number, since it is larger than the sum of its proper divisors (1667690).

2209942 is a wasteful number, since it uses less digits than its factorization.

2209942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2209942 is about 1486.5873670928. The cubic root of 2209942 is about 130.2547666687.

The spelling of 2209942 in words is "two million, two hundred nine thousand, nine hundred forty-two".