13540442 has 16 divisors (see below), whose sum is σ = 21056640. Its totient is φ = 6525792.

The previous prime is 13540433. The next prime is 13540463. The reversal of 13540442 is 24404531.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5798 + ... + 7790.

It is an arithmetic number, because the mean of its divisors is an integer number (1316040).

Almost surely, 2^13540442 is an apocalyptic number.

13540442 is a deficient number, since it is larger than the sum of its proper divisors (7516198).

13540442 is a wasteful number, since it uses less digits than its factorization.

13540442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 13540442 is about 3679.7339577747. The cubic root of 13540442 is about 238.3476899215.

Adding to 13540442 its reverse (24404531), we get a palindrome (37944973).

The spelling of 13540442 in words is "thirteen million, five hundred forty thousand, four hundred forty-two".