127801 has 4 divisors (see below), whose sum is σ = 128592. Its totient is φ = 127012.

The previous prime is 127781. The next prime is 127807. The reversal of 127801 is 108721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 127801 - 2⁹ = 127289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127807) 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 in 3 ways as a sum of consecutive naturals, for example, 55 + ... + 508.

It is an arithmetic number, because the mean of its divisors is an integer number (32148).

2¹²⁷⁸⁰¹ is an apocalyptic number.

It is an amenable number.

127801 is a deficient number, since it is larger than the sum of its proper divisors (791).

127801 is an equidigital number, since it uses as much as digits as its factorization.

127801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 127801 is about 357.4926572673. The cubic root of 127801 is about 50.3707113360.

The spelling of 127801 in words is "one hundred twenty-seven thousand, eight hundred one".