127905 has 8 divisors (see below), whose sum is σ = 204672. Its totient is φ = 68208.

The previous prime is 127877. The next prime is 127913. The reversal of 127905 is 509721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 127905 - 2⁵ = 127873 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4249 + ... + 4278.

It is an arithmetic number, because the mean of its divisors is an integer number (25584).

2¹²⁷⁹⁰⁵ is an apocalyptic number.

127905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127905 is a deficient number, since it is larger than the sum of its proper divisors (76767).

127905 is an equidigital number, since it uses as much as digits as its factorization.

127905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8535.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 127905 is about 357.6380852202. The cubic root of 127905 is about 50.3843709413.

The spelling of 127905 in words is "one hundred twenty-seven thousand, nine hundred five".