164642 has 8 divisors (see below), whose sum is σ = 248832. Its totient is φ = 81700.

The previous prime is 164627. The next prime is 164653. The reversal of 164642 is 246461.

It is a happy number.

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

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, 167 + ... + 597.

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

2¹⁶⁴⁶⁴² is an apocalyptic number.

164642 is a deficient number, since it is larger than the sum of its proper divisors (84190).

164642 is a wasteful number, since it uses less digits than its factorization.

164642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624.

The product of its digits is 1152, while the sum is 23.

The square root of 164642 is about 405.7610134057. The cubic root of 164642 is about 54.8083689067.

The spelling of 164642 in words is "one hundred sixty-four thousand, six hundred forty-two".