13661742 has 8 divisors (see below), whose sum is σ = 27323496. Its totient is φ = 4553912.

The previous prime is 13661689. The next prime is 13661759. The reversal of 13661742 is 24716631.

13661742 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

13661742 is an admirable number.

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, 1138473 + ... + 1138484.

It is an arithmetic number, because the mean of its divisors is an integer number (3415437).

Almost surely, 2^13661742 is an apocalyptic number.

13661742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13661742 is a wasteful number, since it uses less digits than its factorization.

13661742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276962.

The product of its digits is 6048, while the sum is 30.

The square root of 13661742 is about 3696.1793787640. The cubic root of 13661742 is about 239.0573090163.

The spelling of 13661742 in words is "thirteen million, six hundred sixty-one thousand, seven hundred forty-two".