127130645 has 4 divisors (see below), whose sum is σ = 152556780. Its totient is φ = 101704512.

The previous prime is 127130639. The next prime is 127130681. The reversal of 127130645 is 546031721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25060036 + 102070609 = 5006^2 + 10103^2 .

It is a cyclic number.

It is not a de Polignac number, because 127130645 - 2²⁴ = 110353429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12713060 + ... + 12713069.

It is an arithmetic number, because the mean of its divisors is an integer number (38139195).

Almost surely, 2^127130645 is an apocalyptic number.

It is an amenable number.

127130645 is a deficient number, since it is larger than the sum of its proper divisors (25426135).

127130645 is an equidigital number, since it uses as much as digits as its factorization.

127130645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25426134.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 127130645 is about 11275.2226142103. Note that the first 3 decimals coincide. The cubic root of 127130645 is about 502.8248701609.

The spelling of 127130645 in words is "one hundred twenty-seven million, one hundred thirty thousand, six hundred forty-five".