164442127 has 2 divisors, whose sum is σ = 164442128. Its totient is φ = 164442126.

The previous prime is 164442067. The next prime is 164442149. The reversal of 164442127 is 721244461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164442127 - 2⁷ = 164441999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164442227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82221063 + 82221064.

It is an arithmetic number, because the mean of its divisors is an integer number (82221064).

Almost surely, 2^164442127 is an apocalyptic number.

164442127 is a deficient number, since it is larger than the sum of its proper divisors (1).

164442127 is an equidigital number, since it uses as much as digits as its factorization.

164442127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 31.

The square root of 164442127 is about 12823.4990154794. The cubic root of 164442127 is about 547.8618107078.

Adding to 164442127 its reverse (721244461), we get a palindrome (885686588).

The spelling of 164442127 in words is "one hundred sixty-four million, four hundred forty-two thousand, one hundred twenty-seven".