13240342 has 4 divisors (see below), whose sum is σ = 19860516. Its totient is φ = 6620170.

The previous prime is 13240333. The next prime is 13240343. The reversal of 13240342 is 24304231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24304231 = 7 ⋅3472033.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13240343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3310084 + ... + 3310087.

It is an arithmetic number, because the mean of its divisors is an integer number (4965129).

Almost surely, 2^13240342 is an apocalyptic number.

13240342 is a deficient number, since it is larger than the sum of its proper divisors (6620174).

13240342 is an equidigital number, since it uses as much as digits as its factorization.

13240342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6620173.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 13240342 is about 3638.7280744788. The cubic root of 13240342 is about 236.5736666491.

Adding to 13240342 its reverse (24304231), we get a palindrome (37544573).

The spelling of 13240342 in words is "thirteen million, two hundred forty thousand, three hundred forty-two".