1249243 has 2 divisors, whose sum is σ = 1249244. Its totient is φ = 1249242.

The previous prime is 1249217. The next prime is 1249247. The reversal of 1249243 is 3429421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1249243 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1249247) 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, 624621 + 624622.

It is an arithmetic number, because the mean of its divisors is an integer number (624622).

2^1249243 is an apocalyptic number.

1249243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249243 is an equidigital number, since it uses as much as digits as its factorization.

1249243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 1249243 is about 1117.6953967875. The cubic root of 1249243 is about 107.6999846830.

The spelling of 1249243 in words is "one million, two hundred forty-nine thousand, two hundred forty-three".