1224247 has 4 divisors (see below), whose sum is σ = 1247400. Its totient is φ = 1201096.

The previous prime is 1224239. The next prime is 1224257. The reversal of 1224247 is 7424221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1224247 - 2³ = 1224239 is a prime.

It is a super-3 number, since 3×1224247³ = 5504633389368351669, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224217) 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, 11497 + ... + 11602.

It is an arithmetic number, because the mean of its divisors is an integer number (311850).

2^1224247 is an apocalyptic number.

1224247 is a deficient number, since it is larger than the sum of its proper divisors (23153).

1224247 is an equidigital number, since it uses as much as digits as its factorization.

1224247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23152.

The product of its digits is 896, while the sum is 22.

The square root of 1224247 is about 1106.4569580422. The cubic root of 1224247 is about 106.9768197377.

Adding to 1224247 its reverse (7424221), we get a palindrome (8648468).

The spelling of 1224247 in words is "one million, two hundred twenty-four thousand, two hundred forty-seven".