1242223 has 4 divisors (see below), whose sum is σ = 1250008. Its totient is φ = 1234440.

The previous prime is 1242221. The next prime is 1242233. The reversal of 1242223 is 3222421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3222421 = 113 ⋅28517.

It is a cyclic number.

It is not a de Polignac number, because 1242223 - 2¹ = 1242221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242197 and 1242206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3648 + ... + 3973.

It is an arithmetic number, because the mean of its divisors is an integer number (312502).

2^1242223 is an apocalyptic number.

1242223 is a deficient number, since it is larger than the sum of its proper divisors (7785).

1242223 is an equidigital number, since it uses as much as digits as its factorization.

1242223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7784.

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

The square root of 1242223 is about 1114.5505820733. The cubic root of 1242223 is about 107.4978690762.

Adding to 1242223 its reverse (3222421), we get a palindrome (4464644).

The spelling of 1242223 in words is "one million, two hundred forty-two thousand, two hundred twenty-three".