1212443 has 2 divisors, whose sum is σ = 1212444. Its totient is φ = 1212442.

The previous prime is 1212439. The next prime is 1212473. The reversal of 1212443 is 3442121.

It is a weak prime.

It is an emirp because it is prime and its reverse (3442121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1212443 - 2² = 1212439 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 1 + 2¹⁵ + 1 + 2¹⁷ + 4² + 4¹⁰ + 3² .

It is not a weakly prime, because it can be changed into another prime (1212433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606221 + 606222.

It is an arithmetic number, because the mean of its divisors is an integer number (606222).

2^1212443 is an apocalyptic number.

1212443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212443 is an equidigital number, since it uses as much as digits as its factorization.

1212443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 17.

The square root of 1212443 is about 1101.1098946063. The cubic root of 1212443 is about 106.6318907902.

Adding to 1212443 its reverse (3442121), we get a palindrome (4654564).

It can be divided in two parts, 12124 and 43, that added together give a cube (12167 = 23³).

The spelling of 1212443 in words is "one million, two hundred twelve thousand, four hundred forty-three".