1842213 has 4 divisors (see below), whose sum is σ = 2456288. Its totient is φ = 1228140.

The previous prime is 1842199. The next prime is 1842229. The reversal of 1842213 is 3122481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3122481 = 3 ⋅1040827.

It is not a de Polignac number, because 1842213 - 2⁹ = 1841701 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1842213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1842233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307033 + ... + 307038.

It is an arithmetic number, because the mean of its divisors is an integer number (614072).

2^1842213 is an apocalyptic number.

It is an amenable number.

1842213 is a deficient number, since it is larger than the sum of its proper divisors (614075).

1842213 is an equidigital number, since it uses as much as digits as its factorization.

1842213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614074.

The product of its digits is 384, while the sum is 21.

The square root of 1842213 is about 1357.2814741239. The cubic root of 1842213 is about 122.5876202231.

Adding to 1842213 its reverse (3122481), we get a palindrome (4964694).

The spelling of 1842213 in words is "one million, eight hundred forty-two thousand, two hundred thirteen".