1242211 has 4 divisors (see below), whose sum is σ = 1244592. Its totient is φ = 1239832.

The previous prime is 1242193. The next prime is 1242217. The reversal of 1242211 is 1122421.

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: 1122421 = 331 ⋅3391.

It is a cyclic number.

It is not a de Polignac number, because 1242211 - 2⁹ = 1241699 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242191 and 1242200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242217) 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 in 3 ways as a sum of consecutive naturals, for example, 31 + ... + 1576.

It is an arithmetic number, because the mean of its divisors is an integer number (311148).

2^1242211 is an apocalyptic number.

1242211 is a deficient number, since it is larger than the sum of its proper divisors (2381).

1242211 is an equidigital number, since it uses as much as digits as its factorization.

1242211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380.

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

The square root of 1242211 is about 1114.5451987246. The cubic root of 1242211 is about 107.4975229283.

Adding to 1242211 its reverse (1122421), we get a palindrome (2364632).

The spelling of 1242211 in words is "one million, two hundred forty-two thousand, two hundred eleven".