1242272 has 12 divisors (see below), whose sum is σ = 2445786. Its totient is φ = 621120.

The previous prime is 1242271. The next prime is 1242289. The reversal of 1242272 is 2722421.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1008016 + 234256 = 1004^2 + 484^2 .

It is not an unprimeable number, because it can be changed into a prime (1242271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19379 + ... + 19442.

2^1242272 is an apocalyptic number.

It is an amenable number.

1242272 is a deficient number, since it is larger than the sum of its proper divisors (1203514).

1242272 is an equidigital number, since it uses as much as digits as its factorization.

1242272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38831 (or 38823 counting only the distinct ones).

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

The square root of 1242272 is about 1114.5725638109. The cubic root of 1242272 is about 107.4992824903.

Adding to 1242272 its reverse (2722421), we get a palindrome (3964693).

The spelling of 1242272 in words is "one million, two hundred forty-two thousand, two hundred seventy-two".