127705745 has 8 divisors (see below), whose sum is σ = 161312640. Its totient is φ = 96787440.

The previous prime is 127705741. The next prime is 127705777. The reversal of 127705745 is 547507721.

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

It is not a de Polignac number, because 127705745 - 2² = 127705741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 127705699 and 127705708.

It is not an unprimeable number, because it can be changed into a prime (127705741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672041 + ... + 672230.

It is an arithmetic number, because the mean of its divisors is an integer number (20164080).

Almost surely, 2^127705745 is an apocalyptic number.

It is an amenable number.

127705745 is a deficient number, since it is larger than the sum of its proper divisors (33606895).

127705745 is a wasteful number, since it uses less digits than its factorization.

127705745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344295.

The product of its (nonzero) digits is 68600, while the sum is 38.

The square root of 127705745 is about 11300.6966599409. The cubic root of 127705745 is about 503.5819381616.

The spelling of 127705745 in words is "one hundred twenty-seven million, seven hundred five thousand, seven hundred forty-five".