1121242 has 4 divisors (see below), whose sum is σ = 1681866. Its totient is φ = 560620.

The previous prime is 1121231. The next prime is 1121249. The reversal of 1121242 is 2421211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2421211 = 13 ⋅186247.

It can be written as a sum of positive squares in only one way, i.e., 1104601 + 16641 = 1051^2 + 129^2 .

It is not an unprimeable number, because it can be changed into a prime (1121249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280309 + ... + 280312.

2^1121242 is an apocalyptic number.

1121242 is a deficient number, since it is larger than the sum of its proper divisors (560624).

1121242 is an equidigital number, since it uses as much as digits as its factorization.

1121242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560623.

The product of its digits is 32, while the sum is 13.

The square root of 1121242 is about 1058.8871516833. The cubic root of 1121242 is about 103.8882552233. Note that the first 3 decimals are identical.

Adding to 1121242 its reverse (2421211), we get a palindrome (3542453).

The spelling of 1121242 in words is "one million, one hundred twenty-one thousand, two hundred forty-two".