13806442 has 8 divisors (see below), whose sum is σ = 22302756. Its totient is φ = 6372192.

The previous prime is 13806433. The next prime is 13806451. The reversal of 13806442 is 24460831.

It is an interprime number because it is at equal distance from previous prime (13806433) and next prime (13806451).

It can be written as a sum of positive squares in 2 ways, for example, as 12680721 + 1125721 = 3561^2 + 1061^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 13806442.

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, 265483 + ... + 265534.

Almost surely, 2^13806442 is an apocalyptic number.

13806442 is a deficient number, since it is larger than the sum of its proper divisors (8496314).

13806442 is a wasteful number, since it uses less digits than its factorization.

13806442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531032.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 13806442 is about 3715.7020870893. The cubic root of 13806442 is about 239.8983481552.

The spelling of 13806442 in words is "thirteen million, eight hundred six thousand, four hundred forty-two".