13640342 has 8 divisors (see below), whose sum is σ = 20741016. Its totient is φ = 6726672.

The previous prime is 13640339. The next prime is 13640351. The reversal of 13640342 is 24304631.

It is a happy number.

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

It is a nialpdrome in base 11.

It is a congruent number.

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, 46568 + ... + 46859.

It is an arithmetic number, because the mean of its divisors is an integer number (2592627).

Almost surely, 2^13640342 is an apocalyptic number.

13640342 is a deficient number, since it is larger than the sum of its proper divisors (7100674).

13640342 is an equidigital number, since it uses as much as digits as its factorization.

13640342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93502.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 13640342 is about 3693.2833630795. The cubic root of 13640342 is about 238.9324225532.

Adding to 13640342 its reverse (24304631), we get a palindrome (37944973).

The spelling of 13640342 in words is "thirteen million, six hundred forty thousand, three hundred forty-two".