139054171 has 2 divisors, whose sum is σ = 139054172. Its totient is φ = 139054170.

The previous prime is 139054163. The next prime is 139054193. The reversal of 139054171 is 171450931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139054171 - 2³ = 139054163 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139054121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69527085 + 69527086.

It is an arithmetic number, because the mean of its divisors is an integer number (69527086).

Almost surely, 2^139054171 is an apocalyptic number.

139054171 is a deficient number, since it is larger than the sum of its proper divisors (1).

139054171 is an equidigital number, since it uses as much as digits as its factorization.

139054171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 139054171 is about 11792.1232608890. The cubic root of 139054171 is about 518.0774308702.

The spelling of 139054171 in words is "one hundred thirty-nine million, fifty-four thousand, one hundred seventy-one".