122643173 has 2 divisors, whose sum is σ = 122643174. Its totient is φ = 122643172.

The previous prime is 122643167. The next prime is 122643193. The reversal of 122643173 is 371346221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121925764 + 717409 = 11042^2 + 847^2 .

It is an emirp because it is prime and its reverse (371346221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122643173 - 2⁶ = 122643109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122643133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61321586 + 61321587.

It is an arithmetic number, because the mean of its divisors is an integer number (61321587).

Almost surely, 2^122643173 is an apocalyptic number.

It is an amenable number.

122643173 is a deficient number, since it is larger than the sum of its proper divisors (1).

122643173 is an equidigital number, since it uses as much as digits as its factorization.

122643173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 29.

The square root of 122643173 is about 11074.4378186886. The cubic root of 122643173 is about 496.8376046801.

Adding to 122643173 its reverse (371346221), we get a palindrome (493989394).

The spelling of 122643173 in words is "one hundred twenty-two million, six hundred forty-three thousand, one hundred seventy-three".