13399742 has 4 divisors (see below), whose sum is σ = 20099616. Its totient is φ = 6699870.

The previous prime is 13399709. The next prime is 13399811. The reversal of 13399742 is 24799331.

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

It is a junction number, because it is equal to n+sod(n) for n = 13399696 and 13399705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3349934 + ... + 3349937.

It is an arithmetic number, because the mean of its divisors is an integer number (5024904).

Almost surely, 2^13399742 is an apocalyptic number.

13399742 is a deficient number, since it is larger than the sum of its proper divisors (6699874).

13399742 is an equidigital number, since it uses as much as digits as its factorization.

13399742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6699873.

The product of its digits is 40824, while the sum is 38.

The square root of 13399742 is about 3660.5658032605. The cubic root of 13399742 is about 237.5192494093.

It can be divided in two parts, 13399 and 742, that added together give a palindrome (14141).

The spelling of 13399742 in words is "thirteen million, three hundred ninety-nine thousand, seven hundred forty-two".