1224172 has 12 divisors (see below), whose sum is σ = 2150176. Its totient is φ = 609840.

The previous prime is 1224169. The next prime is 1224193. The reversal of 1224172 is 2714221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1522 + ... + 2182.

2^1224172 is an apocalyptic number.

It is an amenable number.

1224172 is a deficient number, since it is larger than the sum of its proper divisors (926004).

1224172 is a wasteful number, since it uses less digits than its factorization.

1224172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128 (or 1126 counting only the distinct ones).

The product of its digits is 224, while the sum is 19.

The square root of 1224172 is about 1106.4230655586. The cubic root of 1224172 is about 106.9746351499.

Adding to 1224172 its reverse (2714221), we get a palindrome (3938393).

The spelling of 1224172 in words is "one million, two hundred twenty-four thousand, one hundred seventy-two".