6540129 has 8 divisors (see below), whose sum is σ = 9689120. Its totient is φ = 4360068.

The previous prime is 6540103. The next prime is 6540133. The reversal of 6540129 is 9210456.

6540129 is a `hidden beast` number, since 654 + 0 + 1 + 2 + 9 = 666.

6540129 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6540129 - 2⁸ = 6539873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 242227 = 6540129 / (6 + 5 + 4 + 0 + 1 + 2 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6540139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121087 + ... + 121140.

It is an arithmetic number, because the mean of its divisors is an integer number (1211140).

Almost surely, 2^6540129 is an apocalyptic number.

It is an amenable number.

6540129 is a deficient number, since it is larger than the sum of its proper divisors (3148991).

6540129 is a wasteful number, since it uses less digits than its factorization.

6540129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242236 (or 242230 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 6540129 is about 2557.3675918804. The cubic root of 6540129 is about 187.0088264491.

The spelling of 6540129 in words is "six million, five hundred forty thousand, one hundred twenty-nine".