163442 has 8 divisors (see below), whose sum is σ = 248832. Its totient is φ = 80500.

The previous prime is 163433. The next prime is 163469. The reversal of 163442 is 244361.

It is a happy number.

163442 is nontrivially palindromic in base 16.

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

It is an unprimeable number.

163442 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434 + ... + 717.

It is an arithmetic number, because the mean of its divisors is an integer number (31104).

2¹⁶³⁴⁴² is an apocalyptic number.

163442 is a deficient number, since it is larger than the sum of its proper divisors (85390).

163442 is a wasteful number, since it uses less digits than its factorization.

163442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224.

The product of its digits is 576, while the sum is 20.

The square root of 163442 is about 404.2796062133. The cubic root of 163442 is about 54.6748863970.

The spelling of 163442 in words is "one hundred sixty-three thousand, four hundred forty-two".