139271 has 6 divisors (see below), whose sum is σ = 153216. Its totient is φ = 126500.

The previous prime is 139267. The next prime is 139273. The reversal of 139271 is 172931.

It is not a de Polignac number, because 139271 - 2² = 139267 is a prime.

It is a super-2 number, since 2×139271² = 38792822882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 455 + ... + 696.

It is an arithmetic number, because the mean of its divisors is an integer number (25536).

2¹³⁹²⁷¹ is an apocalyptic number.

139271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

139271 is a deficient number, since it is larger than the sum of its proper divisors (13945).

139271 is a wasteful number, since it uses less digits than its factorization.

139271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173 (or 1162 counting only the distinct ones).

The product of its digits is 378, while the sum is 23.

The square root of 139271 is about 373.1902999811. The cubic root of 139271 is about 51.8346572680.

The spelling of 139271 in words is "one hundred thirty-nine thousand, two hundred seventy-one".