164742 has 8 divisors (see below), whose sum is σ = 329496. Its totient is φ = 54912.

The previous prime is 164729. The next prime is 164743. The reversal of 164742 is 247461.

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

164742 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164743) 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, 13723 + ... + 13734.

It is an arithmetic number, because the mean of its divisors is an integer number (41187).

2¹⁶⁴⁷⁴² is an apocalyptic number.

164742 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.

164742 is a wasteful number, since it uses less digits than its factorization.

164742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27462.

The product of its digits is 1344, while the sum is 24.

The square root of 164742 is about 405.8842199446. The cubic root of 164742 is about 54.8194631347.

The spelling of 164742 in words is "one hundred sixty-four thousand, seven hundred forty-two".