126217171 has 8 divisors (see below), whose sum is σ = 132977600. Its totient is φ = 119468520.

The previous prime is 126217109. The next prime is 126217181. The reversal of 126217171 is 171712621.

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 126217171 - 2²¹ = 124120019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126217181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26920 + ... + 31258.

It is an arithmetic number, because the mean of its divisors is an integer number (16622200).

Almost surely, 2^126217171 is an apocalyptic number.

126217171 is a deficient number, since it is larger than the sum of its proper divisors (6760429).

126217171 is a wasteful number, since it uses less digits than its factorization.

126217171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5889.

The product of its digits is 1176, while the sum is 28.

The square root of 126217171 is about 11234.6415608154. The cubic root of 126217171 is about 501.6176554045.

Adding to 126217171 its reverse (171712621), we get a palindrome (297929792).

The spelling of 126217171 in words is "one hundred twenty-six million, two hundred seventeen thousand, one hundred seventy-one".