13240442 has 8 divisors (see below), whose sum is σ = 19876116. Its totient is φ = 6615072.

The previous prime is 13240421. The next prime is 13240453. The reversal of 13240442 is 24404231.

It can be written as a sum of positive squares in 2 ways, for example, as 12737761 + 502681 = 3569^2 + 709^2 .

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, 3608 + ... + 6284.

Almost surely, 2^13240442 is an apocalyptic number.

13240442 is a deficient number, since it is larger than the sum of its proper divisors (6635674).

13240442 is a wasteful number, since it uses less digits than its factorization.

13240442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5152.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 13240442 is about 3638.7418155181. The cubic root of 13240442 is about 236.5742622356.

Adding to 13240442 its reverse (24404231), we get a palindrome (37644673).

The spelling of 13240442 in words is "thirteen million, two hundred forty thousand, four hundred forty-two".