13513442 has 4 divisors (see below), whose sum is σ = 20270166. Its totient is φ = 6756720.

The previous prime is 13513439. The next prime is 13513459. The reversal of 13513442 is 24431531.

13513442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11296321 + 2217121 = 3361^2 + 1489^2 .

It is a super-2 number, since 2×13513442² = 365226229374728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3378359 + ... + 3378362.

Almost surely, 2^13513442 is an apocalyptic number.

13513442 is a deficient number, since it is larger than the sum of its proper divisors (6756724).

13513442 is an equidigital number, since it uses as much as digits as its factorization.

13513442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6756723.

The product of its digits is 1440, while the sum is 23.

The square root of 13513442 is about 3676.0633835667. The cubic root of 13513442 is about 238.1891606352.

Adding to 13513442 its reverse (24431531), we get a palindrome (37944973).

The spelling of 13513442 in words is "thirteen million, five hundred thirteen thousand, four hundred forty-two".