127139933 has 2 divisors, whose sum is σ = 127139934. Its totient is φ = 127139932.

The previous prime is 127139927. The next prime is 127139977. The reversal of 127139933 is 339931721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95981209 + 31158724 = 9797^2 + 5582^2 .

It is a cyclic number.

It is not a de Polignac number, because 127139933 - 2⁴ = 127139917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127139333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63569966 + 63569967.

It is an arithmetic number, because the mean of its divisors is an integer number (63569967).

Almost surely, 2^127139933 is an apocalyptic number.

It is an amenable number.

127139933 is a deficient number, since it is larger than the sum of its proper divisors (1).

127139933 is an equidigital number, since it uses as much as digits as its factorization.

127139933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 38.

The square root of 127139933 is about 11275.6344832564. The cubic root of 127139933 is about 502.8371151070.

The spelling of 127139933 in words is "one hundred twenty-seven million, one hundred thirty-nine thousand, nine hundred thirty-three".