13581242 has 8 divisors (see below), whose sum is σ = 20507232. Its totient is φ = 6745500.

The previous prime is 13581229. The next prime is 13581287. The reversal of 13581242 is 24218531.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22184 + ... + 22787.

It is an arithmetic number, because the mean of its divisors is an integer number (2563404).

Almost surely, 2^13581242 is an apocalyptic number.

13581242 is a deficient number, since it is larger than the sum of its proper divisors (6925990).

13581242 is a wasteful number, since it uses less digits than its factorization.

13581242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45124.

The product of its digits is 1920, while the sum is 26.

The square root of 13581242 is about 3685.2736669072. The cubic root of 13581242 is about 238.5868459428.

Adding to 13581242 its reverse (24218531), we get a palindrome (37799773).

The spelling of 13581242 in words is "thirteen million, five hundred eighty-one thousand, two hundred forty-two".