127945 has 4 divisors (see below), whose sum is σ = 153540. Its totient is φ = 102352.

The previous prime is 127931. The next prime is 127951. The reversal of 127945 is 549721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549721 = 241 ⋅2281.

It can be written as a sum of positive squares in 2 ways, for example, as 84681 + 43264 = 291^2 + 208^2 .

It is a cyclic number.

It is not a de Polignac number, because 127945 - 2⁵ = 127913 is a prime.

It is an Ulam number.

It is a plaindrome in base 14.

It is an unprimeable number.

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, 12790 + ... + 12799.

It is an arithmetic number, because the mean of its divisors is an integer number (38385).

2¹²⁷⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

127945 is a deficient number, since it is larger than the sum of its proper divisors (25595).

127945 is an equidigital number, since it uses as much as digits as its factorization.

127945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25594.

The product of its digits is 2520, while the sum is 28.

The square root of 127945 is about 357.6940033045. The cubic root of 127945 is about 50.3896226640.

The spelling of 127945 in words is "one hundred twenty-seven thousand, nine hundred forty-five".