13137442 has 8 divisors (see below), whose sum is σ = 20238876. Its totient is φ = 6391152.

The previous prime is 13137437. The next prime is 13137457. The reversal of 13137442 is 24473131.

It can be written as a sum of positive squares in 2 ways, for example, as 10182481 + 2954961 = 3191^2 + 1719^2 .

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

It is a nialpdrome in base 16.

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, 88693 + ... + 88840.

Almost surely, 2^13137442 is an apocalyptic number.

13137442 is a deficient number, since it is larger than the sum of its proper divisors (7101434).

13137442 is a wasteful number, since it uses less digits than its factorization.

13137442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177572.

The product of its digits is 2016, while the sum is 25.

The square root of 13137442 is about 3624.5609389276. The cubic root of 13137442 is about 235.9592120451.

It can be divided in two parts, 131 and 37442, that added together give a palindrome (37573).

The spelling of 13137442 in words is "thirteen million, one hundred thirty-seven thousand, four hundred forty-two".