13542543 has 24 divisors (see below), whose sum is σ = 22583808. Its totient is φ = 7659792.

The previous prime is 13542539. The next prime is 13542553. The reversal of 13542543 is 34524531.

13542543 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 13542543 - 2² = 13542539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13542553) 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 in 23 ways as a sum of consecutive naturals, for example, 5446 + ... + 7532.

It is an arithmetic number, because the mean of its divisors is an integer number (940992).

Almost surely, 2^13542543 is an apocalyptic number.

13542543 is a deficient number, since it is larger than the sum of its proper divisors (9041265).

13542543 is a wasteful number, since it uses less digits than its factorization.

13542543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203 (or 2200 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 13542543 is about 3680.0194292965. The cubic root of 13542543 is about 238.3600170079.

The spelling of 13542543 in words is "thirteen million, five hundred forty-two thousand, five hundred forty-three".