127130805 has 24 divisors (see below), whose sum is σ = 231959520. Its totient is φ = 64234080.

The previous prime is 127130803. The next prime is 127130807. The reversal of 127130805 is 508031721.

It is an interprime number because it is at equal distance from previous prime (127130803) and next prime (127130807).

It is not a de Polignac number, because 127130805 - 2¹ = 127130803 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127130803) 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 23 ways as a sum of consecutive naturals, for example, 73491 + ... + 75200.

It is an arithmetic number, because the mean of its divisors is an integer number (9664980).

Almost surely, 2^127130805 is an apocalyptic number.

127130805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127130805 is a deficient number, since it is larger than the sum of its proper divisors (104828715).

127130805 is a wasteful number, since it uses less digits than its factorization.

127130805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148721 (or 148718 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 127130805 is about 11275.2297094117. The cubic root of 127130805 is about 502.8250811039.

The spelling of 127130805 in words is "one hundred twenty-seven million, one hundred thirty thousand, eight hundred five".