13645742 has 8 divisors (see below), whose sum is σ = 22329432. Its totient is φ = 6202600.

The previous prime is 13645727. The next prime is 13645757. The reversal of 13645742 is 24754631.

It is an interprime number because it is at equal distance from previous prime (13645727) and next prime (13645757).

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

It is a junction number, because it is equal to n+sod(n) for n = 13645699 and 13645708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310109 + ... + 310152.

It is an arithmetic number, because the mean of its divisors is an integer number (2791179).

Almost surely, 2^13645742 is an apocalyptic number.

13645742 is a deficient number, since it is larger than the sum of its proper divisors (8683690).

13645742 is a wasteful number, since it uses less digits than its factorization.

13645742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620274.

The product of its digits is 20160, while the sum is 32.

The square root of 13645742 is about 3694.0143475628. The cubic root of 13645742 is about 238.9639482744.

Subtracting 13645742 from its reverse (24754631), we obtain a square (11108889 = 3333²).

The spelling of 13645742 in words is "thirteen million, six hundred forty-five thousand, seven hundred forty-two".