15442 has 8 divisors (see below), whose sum is σ = 26496. Its totient is φ = 6612.

The previous prime is 15439. The next prime is 15443. The reversal of 15442 is 24451.

15442 is digitally balanced in base 2, because in such base 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.

It is not an unprimeable number, because it can be changed into a prime (15443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538 + ... + 565.

It is an arithmetic number, because the mean of its divisors is an integer number (3312).

2¹⁵⁴⁴² is an apocalyptic number.

15442 is a deficient number, since it is larger than the sum of its proper divisors (11054).

15442 is a wasteful number, since it uses less digits than its factorization.

15442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112.

The product of its digits is 160, while the sum is 16.

The square root of 15442 is about 124.2658440602. The cubic root of 15442 is about 24.9020164708.

Adding to 15442 its reverse (24451), we get a palindrome (39893).

Subtracting 15442 from its reverse (24451), we obtain a palindrome (9009).

It can be divided in two parts, 154 and 42, that added together give a square (196 = 14²).

The spelling of 15442 in words is "fifteen thousand, four hundred forty-two".