13543542 has 36 divisors (see below), whose sum is σ = 31044780. Its totient is φ = 4255416.

The previous prime is 13543499. The next prime is 13543547. The reversal of 13543542 is 24534531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13543547) 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 17 ways as a sum of consecutive naturals, for example, 67959 + ... + 68157.

It is an arithmetic number, because the mean of its divisors is an integer number (862355).

Almost surely, 2^13543542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13543542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15522390).

13543542 is an abundant number, since it is smaller than the sum of its proper divisors (17501238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13543542 is a wasteful number, since it uses less digits than its factorization.

13543542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 223 counting only the distinct ones).

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

The square root of 13543542 is about 3680.1551597725. The cubic root of 13543542 is about 238.3658779407.

The spelling of 13543542 in words is "thirteen million, five hundred forty-three thousand, five hundred forty-two".