1002543 has 8 divisors (see below), whose sum is σ = 1347456. Its totient is φ = 663000.

The previous prime is 1002527. The next prime is 1002553. The reversal of 1002543 is 3452001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1002543 - 2⁴ = 1002527 is a prime.

1002543 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 883 + ... + 1668.

It is an arithmetic number, because the mean of its divisors is an integer number (168432).

2^1002543 is an apocalyptic number.

1002543 is a deficient number, since it is larger than the sum of its proper divisors (344913).

1002543 is a wasteful number, since it uses less digits than its factorization.

1002543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1002543 is about 1001.2706926701. The cubic root of 1002543 is about 100.0846949141.

Adding to 1002543 its reverse (3452001), we get a palindrome (4454544).

The spelling of 1002543 in words is "one million, two thousand, five hundred forty-three".