1042543 has 4 divisors (see below), whose sum is σ = 1050880. Its totient is φ = 1034208.

The previous prime is 1042529. The next prime is 1042571. The reversal of 1042543 is 3452401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3452401 = 263 ⋅13127.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1042543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3978 + ... + 4231.

It is an arithmetic number, because the mean of its divisors is an integer number (262720).

2^1042543 is an apocalyptic number.

1042543 is a deficient number, since it is larger than the sum of its proper divisors (8337).

1042543 is an equidigital number, since it uses as much as digits as its factorization.

1042543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8336.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1042543 is about 1021.0499498066. The cubic root of 1042543 is about 101.3984521522.

Adding to 1042543 its reverse (3452401), we get a palindrome (4494944).

The spelling of 1042543 in words is "one million, forty-two thousand, five hundred forty-three".