164243 has 8 divisors (see below), whose sum is σ = 176928. Its totient is φ = 152064.

The previous prime is 164239. The next prime is 164249. The reversal of 164243 is 342461.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 164243 - 2² = 164239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164249) 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 7 ways as a sum of consecutive naturals, for example, 755 + ... + 947.

It is an arithmetic number, because the mean of its divisors is an integer number (22116).

2¹⁶⁴²⁴³ is an apocalyptic number.

164243 is a deficient number, since it is larger than the sum of its proper divisors (12685).

164243 is a wasteful number, since it uses less digits than its factorization.

164243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253.

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

The square root of 164243 is about 405.2690464371. The cubic root of 164243 is about 54.7640581624.

The spelling of 164243 in words is "one hundred sixty-four thousand, two hundred forty-three".