126171 has 8 divisors (see below), whose sum is σ = 186960. Its totient is φ = 84096.

The previous prime is 126151. The next prime is 126173. The reversal of 126171 is 171621.

It is not a de Polignac number, because 126171 - 2⁶ = 126107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126173) 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, 2310 + ... + 2363.

It is an arithmetic number, because the mean of its divisors is an integer number (23370).

2¹²⁶¹⁷¹ is an apocalyptic number.

126171 is a deficient number, since it is larger than the sum of its proper divisors (60789).

126171 is an equidigital number, since it uses as much as digits as its factorization.

126171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4682 (or 4676 counting only the distinct ones).

The product of its digits is 84, while the sum is 18.

The square root of 126171 is about 355.2055742806. The cubic root of 126171 is about 50.1556483027.

Adding to 126171 its reverse (171621), we get a palindrome (297792).

The spelling of 126171 in words is "one hundred twenty-six thousand, one hundred seventy-one".