1442209 has 2 divisors, whose sum is σ = 1442210. Its totient is φ = 1442208.

The previous prime is 1442191. The next prime is 1442227. The reversal of 1442209 is 9022441.

It is a balanced prime because it is at equal distance from previous prime (1442191) and next prime (1442227).

It can be written as a sum of positive squares in only one way, i.e., 1440000 + 2209 = 1200^2 + 47^2 .

It is an emirp because it is prime and its reverse (9022441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1442209 - 2⁹ = 1441697 is a prime.

It is a Chen prime.

It is an Ulam number.

1442209 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1442209.

It is not a weakly prime, because it can be changed into another prime (1442279) 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, 721104 + 721105.

It is an arithmetic number, because the mean of its divisors is an integer number (721105).

2^1442209 is an apocalyptic number.

It is an amenable number.

1442209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442209 is an equidigital number, since it uses as much as digits as its factorization.

1442209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1442209 is about 1200.9200639510. The cubic root of 1442209 is about 112.9820369807.

It can be divided in two parts, 144 and 2209, that multiplied together give a square (318096 = 564²).

The spelling of 1442209 in words is "one million, four hundred forty-two thousand, two hundred nine".