10002543 has 16 divisors (see below), whose sum is σ = 13853280. Its totient is φ = 6414336.

The previous prime is 10002529. The next prime is 10002547. The reversal of 10002543 is 34520001.

10002543 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10002543 - 2⁴ = 10002527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10303 + ... + 11231.

It is an arithmetic number, because the mean of its divisors is an integer number (865830).

Almost surely, 2^10002543 is an apocalyptic number.

10002543 is a deficient number, since it is larger than the sum of its proper divisors (3850737).

10002543 is an equidigital number, since it uses as much as digits as its factorization.

10002543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066.

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

The square root of 10002543 is about 3162.6797182137. The cubic root of 10002543 is about 215.4617298801.

Adding to 10002543 its reverse (34520001), we get a palindrome (44522544).

The spelling of 10002543 in words is "ten million, two thousand, five hundred forty-three".