1244215 has 16 divisors (see below), whose sum is σ = 1797120. Its totient is φ = 807840.

The previous prime is 1244203. The next prime is 1244233. The reversal of 1244215 is 5124421.

It is not a de Polignac number, because 1244215 - 2⁵ = 1244183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 1244192 and 1244201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271 + ... + 1600.

It is an arithmetic number, because the mean of its divisors is an integer number (112320).

2^1244215 is an apocalyptic number.

1244215 is a deficient number, since it is larger than the sum of its proper divisors (552905).

1244215 is a wasteful number, since it uses less digits than its factorization.

1244215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902.

The product of its digits is 320, while the sum is 19.

The square root of 1244215 is about 1115.4438578431. The cubic root of 1244215 is about 107.5552987530. Note that the first 3 decimals are identical.

Adding to 1244215 its reverse (5124421), we get a palindrome (6368636).

The spelling of 1244215 in words is "one million, two hundred forty-four thousand, two hundred fifteen".