2219842 has 4 divisors (see below), whose sum is σ = 3329766. Its totient is φ = 1109920.

The previous prime is 2219839. The next prime is 2219849. The reversal of 2219842 is 2489122.

2219842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1929321 + 290521 = 1389^2 + 539^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2219842.

It is not an unprimeable number, because it can be changed into a prime (2219849) 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, 554959 + ... + 554962.

2^2219842 is an apocalyptic number.

2219842 is a deficient number, since it is larger than the sum of its proper divisors (1109924).

2219842 is a wasteful number, since it uses less digits than its factorization.

2219842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109923.

The product of its digits is 2304, while the sum is 28.

The square root of 2219842 is about 1489.9134203033. The cubic root of 2219842 is about 130.4489801196.

The spelling of 2219842 in words is "two million, two hundred nineteen thousand, eight hundred forty-two".