2125128147 has 16 divisors (see below), whose sum is σ = 2846928000. Its totient is φ = 1410057792.

The previous prime is 2125128127. The next prime is 2125128191. The reversal of 2125128147 is 7418215212.

It is not a de Polignac number, because 2125128147 - 2¹⁴ = 2125111763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2125128127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605604 + ... + 609102.

It is an arithmetic number, because the mean of its divisors is an integer number (177933000).

Almost surely, 2^2125128147 is an apocalyptic number.

2125128147 is a deficient number, since it is larger than the sum of its proper divisors (721799853).

2125128147 is a wasteful number, since it uses less digits than its factorization.

2125128147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4402.

The product of its digits is 8960, while the sum is 33.

The square root of 2125128147 is about 46099.1122148789. The cubic root of 2125128147 is about 1285.6666381055. Note that the first 4 decimals are identical.

The spelling of 2125128147 in words is "two billion, one hundred twenty-five million, one hundred twenty-eight thousand, one hundred forty-seven".