127139011 has 2 divisors, whose sum is σ = 127139012. Its totient is φ = 127139010.

The previous prime is 127138981. The next prime is 127139027. The reversal of 127139011 is 110931721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127139011 - 2⁷ = 127138883 is a prime.

It is a super-3 number, since 3×127139011³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (127169011) 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 as a sum of consecutive naturals, namely, 63569505 + 63569506.

It is an arithmetic number, because the mean of its divisors is an integer number (63569506).

Almost surely, 2^127139011 is an apocalyptic number.

127139011 is a deficient number, since it is larger than the sum of its proper divisors (1).

127139011 is an equidigital number, since it uses as much as digits as its factorization.

127139011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 127139011 is about 11275.5935985650. The cubic root of 127139011 is about 502.8358996039.

The spelling of 127139011 in words is "one hundred twenty-seven million, one hundred thirty-nine thousand, eleven".