139066171 has 16 divisors (see below), whose sum is σ = 152216064. Its totient is φ = 126532224.

The previous prime is 139066163. The next prime is 139066181. The reversal of 139066171 is 171660931.

It is not a de Polignac number, because 139066171 - 2³ = 139066163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139066121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74370 + ... + 76216.

It is an arithmetic number, because the mean of its divisors is an integer number (9513504).

Almost surely, 2^139066171 is an apocalyptic number.

139066171 is a deficient number, since it is larger than the sum of its proper divisors (13149893).

139066171 is a wasteful number, since it uses less digits than its factorization.

139066171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 139066171 is about 11792.6320641322. The cubic root of 139066171 is about 518.0923333367.

The spelling of 139066171 in words is "one hundred thirty-nine million, sixty-six thousand, one hundred seventy-one".