2539129 has 4 divisors (see below), whose sum is σ = 2546676. Its totient is φ = 2531584.

The previous prime is 2539123. The next prime is 2539151. The reversal of 2539129 is 9219352.

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 522729 + 2016400 = 723^2 + 1420^2 .

It is a cyclic number.

It is not a de Polignac number, because 2539129 - 2⁹ = 2538617 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2539129.

It is not an unprimeable number, because it can be changed into a prime (2539123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3244 + ... + 3949.

It is an arithmetic number, because the mean of its divisors is an integer number (636669).

2^2539129 is an apocalyptic number.

It is an amenable number.

2539129 is a deficient number, since it is larger than the sum of its proper divisors (7547).

2539129 is an equidigital number, since it uses as much as digits as its factorization.

2539129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7546.

The product of its digits is 4860, while the sum is 31.

The square root of 2539129 is about 1593.4644646179. The cubic root of 2539129 is about 136.4253013897.

The spelling of 2539129 in words is "two million, five hundred thirty-nine thousand, one hundred twenty-nine".