1272224 has 24 divisors (see below), whose sum is σ = 2540160. Its totient is φ = 627136.

The previous prime is 1272223. The next prime is 1272233. The reversal of 1272224 is 4222721.

It is a happy number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1272196 and 1272205.

It is not an unprimeable number, because it can be changed into a prime (1272223) 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, 2417 + ... + 2895.

It is an arithmetic number, because the mean of its divisors is an integer number (105840).

2^1272224 is an apocalyptic number.

It is an amenable number.

1272224 is a deficient number, since it is larger than the sum of its proper divisors (1267936).

1272224 is an equidigital number, since it uses as much as digits as its factorization.

1272224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572 (or 564 counting only the distinct ones).

The product of its digits is 448, while the sum is 20.

The square root of 1272224 is about 1127.9290757845. The cubic root of 1272224 is about 108.3563900957.

Adding to 1272224 its reverse (4222721), we get a palindrome (5494945).

The spelling of 1272224 in words is "one million, two hundred seventy-two thousand, two hundred twenty-four".