127745457 has 16 divisors (see below), whose sum is σ = 195075072. Its totient is φ = 72841680.

The previous prime is 127745419. The next prime is 127745477. The reversal of 127745457 is 754547721.

It is not a de Polignac number, because 127745457 - 2⁶ = 127745393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127745477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3982 + ... + 16472.

It is an arithmetic number, because the mean of its divisors is an integer number (12192192).

Almost surely, 2^127745457 is an apocalyptic number.

It is an amenable number.

127745457 is a deficient number, since it is larger than the sum of its proper divisors (67329615).

127745457 is a wasteful number, since it uses less digits than its factorization.

127745457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12988.

The product of its digits is 274400, while the sum is 42.

The square root of 127745457 is about 11302.4535831827. The cubic root of 127745457 is about 503.6341315154.

The spelling of 127745457 in words is "one hundred twenty-seven million, seven hundred forty-five thousand, four hundred fifty-seven".