127851149 has 2 divisors, whose sum is σ = 127851150. Its totient is φ = 127851148.

The previous prime is 127851137. The next prime is 127851173. The reversal of 127851149 is 941158721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98148649 + 29702500 = 9907^2 + 5450^2 .

It is a cyclic number.

It is not a de Polignac number, because 127851149 - 2¹² = 127847053 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127851179) 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, 63925574 + 63925575.

It is an arithmetic number, because the mean of its divisors is an integer number (63925575).

Almost surely, 2^127851149 is an apocalyptic number.

It is an amenable number.

127851149 is a deficient number, since it is larger than the sum of its proper divisors (1).

127851149 is an equidigital number, since it uses as much as digits as its factorization.

127851149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 38.

The square root of 127851149 is about 11307.1282384167. The cubic root of 127851149 is about 503.7729894871.

The spelling of 127851149 in words is "one hundred twenty-seven million, eight hundred fifty-one thousand, one hundred forty-nine".