1423243 has 2 divisors, whose sum is σ = 1423244. Its totient is φ = 1423242.

The previous prime is 1423237. The next prime is 1423259. The reversal of 1423243 is 3423241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423243 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1423243.

It is not a weakly prime, because it can be changed into another prime (1423273) 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 as a sum of consecutive naturals, namely, 711621 + 711622.

It is an arithmetic number, because the mean of its divisors is an integer number (711622).

2^1423243 is an apocalyptic number.

1423243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423243 is an equidigital number, since it uses as much as digits as its factorization.

1423243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 19.

The square root of 1423243 is about 1192.9974853284. The cubic root of 1423243 is about 112.4845871889.

Adding to 1423243 its reverse (3423241), we get a palindrome (4846484).

The spelling of 1423243 in words is "one million, four hundred twenty-three thousand, two hundred forty-three".