1223242 has 4 divisors (see below), whose sum is σ = 1834866. Its totient is φ = 611620.

The previous prime is 1223237. The next prime is 1223263. The reversal of 1223242 is 2423221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2423221 = 239 ⋅10139.

It can be written as a sum of positive squares in only one way, i.e., 1121481 + 101761 = 1059^2 + 319^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305809 + ... + 305812.

2^1223242 is an apocalyptic number.

1223242 is a deficient number, since it is larger than the sum of its proper divisors (611624).

1223242 is an equidigital number, since it uses as much as digits as its factorization.

1223242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611623.

The product of its digits is 192, while the sum is 16.

The square root of 1223242 is about 1106.0027124741. The cubic root of 1223242 is about 106.9475388446.

Adding to 1223242 its reverse (2423221), we get a palindrome (3646463).

It can be divided in two parts, 122 and 3242, that added together give a square (3364 = 58²).

The spelling of 1223242 in words is "one million, two hundred twenty-three thousand, two hundred forty-two".