13668742 has 4 divisors (see below), whose sum is σ = 20503116. Its totient is φ = 6834370.

The previous prime is 13668727. The next prime is 13668749. The reversal of 13668742 is 24786631.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13668749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3417184 + ... + 3417187.

It is an arithmetic number, because the mean of its divisors is an integer number (5125779).

Almost surely, 2^13668742 is an apocalyptic number.

13668742 is a deficient number, since it is larger than the sum of its proper divisors (6834374).

13668742 is an equidigital number, since it uses as much as digits as its factorization.

13668742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6834373.

The product of its digits is 48384, while the sum is 37.

The square root of 13668742 is about 3697.1261812386. The cubic root of 13668742 is about 239.0981314199.

The spelling of 13668742 in words is "thirteen million, six hundred sixty-eight thousand, seven hundred forty-two".