127745285 has 8 divisors (see below), whose sum is σ = 155807736. Its totient is φ = 100520640.

The previous prime is 127745281. The next prime is 127745287. The reversal of 127745285 is 582547721.

It can be written as a sum of positive squares in 4 ways, for example, as 15194404 + 112550881 = 3898^2 + 10609^2 .

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

It is not a de Polignac number, because 127745285 - 2² = 127745281 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127745281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209114 + ... + 209723.

It is an arithmetic number, because the mean of its divisors is an integer number (19475967).

Almost surely, 2^127745285 is an apocalyptic number.

It is an amenable number.

127745285 is a deficient number, since it is larger than the sum of its proper divisors (28062451).

127745285 is an equidigital number, since it uses as much as digits as its factorization.

127745285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418903.

The product of its digits is 156800, while the sum is 41.

The square root of 127745285 is about 11302.4459742128. The cubic root of 127745285 is about 503.6339054797.

The spelling of 127745285 in words is "one hundred twenty-seven million, seven hundred forty-five thousand, two hundred eighty-five".