127445 has 8 divisors (see below), whose sum is σ = 155520. Its totient is φ = 100240.

The previous prime is 127423. The next prime is 127447. The reversal of 127445 is 544721.

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

It is not a de Polignac number, because 127445 - 2⁸ = 127189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127447) 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 7 ways as a sum of consecutive naturals, for example, 176 + ... + 534.

It is an arithmetic number, because the mean of its divisors is an integer number (19440).

127445 is a Friedman number, since it can be written as (51*7)^(4-2)-4, using all its digits and the basic arithmetic operations.

2¹²⁷⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

127445 is a deficient number, since it is larger than the sum of its proper divisors (28075).

127445 is an equidigital number, since it uses as much as digits as its factorization.

127445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435.

The product of its digits is 1120, while the sum is 23.

The square root of 127445 is about 356.9943977151. The cubic root of 127445 is about 50.3238972804.

The spelling of 127445 in words is "one hundred twenty-seven thousand, four hundred forty-five".