1244213 has 4 divisors (see below), whose sum is σ = 1317420. Its totient is φ = 1171008.

The previous prime is 1244203. The next prime is 1244233. The reversal of 1244213 is 3124421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1129969 + 114244 = 1063^2 + 338^2 .

It is a cyclic number.

It is not a de Polignac number, because 1244213 - 2⁴ = 1244197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 73189 = 1244213 / (1 + 2 + 4 + 4 + 2 + 1 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1244191 and 1244200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244203) 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, 36578 + ... + 36611.

It is an arithmetic number, because the mean of its divisors is an integer number (329355).

2^1244213 is an apocalyptic number.

It is an amenable number.

1244213 is a deficient number, since it is larger than the sum of its proper divisors (73207).

1244213 is an equidigital number, since it uses as much as digits as its factorization.

1244213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73206.

The product of its digits is 192, while the sum is 17.

The square root of 1244213 is about 1115.4429613387. The cubic root of 1244213 is about 107.5552411234. Note that the first 3 decimals are identical.

Adding to 1244213 its reverse (3124421), we get a palindrome (4368634).

The spelling of 1244213 in words is "one million, two hundred forty-four thousand, two hundred thirteen".