13505242 has 16 divisors (see below), whose sum is σ = 22190760. Its totient is φ = 6135808.

The previous prime is 13505227. The next prime is 13505263. The reversal of 13505242 is 24250531.

13505242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9853321 + 3651921 = 3139^2 + 1911^2 .

It is a super-2 number, since 2×13505242² = 364783122957128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5863 + ... + 7834.

Almost surely, 2^13505242 is an apocalyptic number.

13505242 is a deficient number, since it is larger than the sum of its proper divisors (8685518).

13505242 is a wasteful number, since it uses less digits than its factorization.

13505242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13745.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 13505242 is about 3674.9478907870. The cubic root of 13505242 is about 238.1409729046.

Adding to 13505242 its reverse (24250531), we get a palindrome (37755773).

The spelling of 13505242 in words is "thirteen million, five hundred five thousand, two hundred forty-two".