126270171 has 10 divisors (see below), whose sum is σ = 188625932. Its totient is φ = 84180060.

The previous prime is 126270149. The next prime is 126270187. The reversal of 126270171 is 171072621.

It is not a de Polignac number, because 126270171 - 2⁶ = 126270107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126272171) 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 9 ways as a sum of consecutive naturals, for example, 779365 + ... + 779526.

Almost surely, 2^126270171 is an apocalyptic number.

126270171 is a deficient number, since it is larger than the sum of its proper divisors (62355761).

126270171 is an equidigital number, since it uses as much as digits as its factorization.

126270171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558903 (or 1558894 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 126270171 is about 11237.0000889917. Note that the first 4 decimals coincide. The cubic root of 126270171 is about 501.6878571982.

The spelling of 126270171 in words is "one hundred twenty-six million, two hundred seventy thousand, one hundred seventy-one".