127849 has 2 divisors, whose sum is σ = 127850. Its totient is φ = 127848.

The previous prime is 127843. The next prime is 127859. The reversal of 127849 is 948721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127449 + 400 = 357^2 + 20^2 .

It is an emirp because it is prime and its reverse (948721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127849 - 2⁵ = 127817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127849.

It is not a weakly prime, because it can be changed into another prime (127843) 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, 63924 + 63925.

It is an arithmetic number, because the mean of its divisors is an integer number (63925).

2¹²⁷⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

127849 is a deficient number, since it is larger than the sum of its proper divisors (1).

127849 is an equidigital number, since it uses as much as digits as its factorization.

127849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 31.

The square root of 127849 is about 357.5597852108. The cubic root of 127849 is about 50.3770166897.

The spelling of 127849 in words is "one hundred twenty-seven thousand, eight hundred forty-nine".