12147173 has 2 divisors, whose sum is σ = 12147174. Its totient is φ = 12147172.

The previous prime is 12147139. The next prime is 12147203. The reversal of 12147173 is 37174121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11404129 + 743044 = 3377^2 + 862^2 .

It is a cyclic number.

It is not a de Polignac number, because 12147173 - 2⁸ = 12146917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12177173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6073586 + 6073587.

It is an arithmetic number, because the mean of its divisors is an integer number (6073587).

Almost surely, 2^12147173 is an apocalyptic number.

It is an amenable number.

12147173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12147173 is an equidigital number, since it uses as much as digits as its factorization.

12147173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176, while the sum is 26.

The square root of 12147173 is about 3485.2794722949. The cubic root of 12147173 is about 229.8749982382.

The spelling of 12147173 in words is "twelve million, one hundred forty-seven thousand, one hundred seventy-three".