164442143 has 8 divisors (see below), whose sum is σ = 169155840. Its totient is φ = 159779160.

The previous prime is 164442127. The next prime is 164442149. The reversal of 164442143 is 341244461.

164442143 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 a cyclic number.

It is not a de Polignac number, because 164442143 - 2⁴ = 164442127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164442149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6053 + ... + 19118.

It is an arithmetic number, because the mean of its divisors is an integer number (21144480).

Almost surely, 2^164442143 is an apocalyptic number.

164442143 is a deficient number, since it is larger than the sum of its proper divisors (4713697).

164442143 is a wasteful number, since it uses less digits than its factorization.

164442143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25357.

The product of its digits is 9216, while the sum is 29.

The square root of 164442143 is about 12823.4996393340. The cubic root of 164442143 is about 547.8618284765.

The spelling of 164442143 in words is "one hundred sixty-four million, four hundred forty-two thousand, one hundred forty-three".