127139 has 2 divisors, whose sum is σ = 127140. Its totient is φ = 127138.

The previous prime is 127133. The next prime is 127157. The reversal of 127139 is 931721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127139 - 2⁴ = 127123 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (127133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63569 + 63570.

It is an arithmetic number, because the mean of its divisors is an integer number (63570).

2¹²⁷¹³⁹ is an apocalyptic number.

127139 is a deficient number, since it is larger than the sum of its proper divisors (1).

127139 is an equidigital number, since it uses as much as digits as its factorization.

127139 is an odious number, because the sum of its binary digits is odd.

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

The square root of 127139 is about 356.5655619939. The cubic root of 127139 is about 50.2835885102.

The spelling of 127139 in words is "one hundred twenty-seven thousand, one hundred thirty-nine".