1003943 has 2 divisors, whose sum is σ = 1003944. Its totient is φ = 1003942.

The previous prime is 1003931. The next prime is 1003957. The reversal of 1003943 is 3493001.

It is a weak prime.

It is an emirp because it is prime and its reverse (3493001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1003943 - 2⁶ = 1003879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1003913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501971 + 501972.

It is an arithmetic number, because the mean of its divisors is an integer number (501972).

2^1003943 is an apocalyptic number.

1003943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003943 is an equidigital number, since it uses as much as digits as its factorization.

1003943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1003943 is about 1001.9695604159. The cubic root of 1003943 is about 100.1312609635.

Adding to 1003943 its reverse (3493001), we get a palindrome (4496944).

The spelling of 1003943 in words is "one million, three thousand, nine hundred forty-three".