2012539 has 4 divisors (see below), whose sum is σ = 2023840. Its totient is φ = 2001240.

The previous prime is 2012533. The next prime is 2012597. The reversal of 2012539 is 9352102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9352102 = 2 ⋅4676051.

It is a cyclic number.

It is not a de Polignac number, because 2012539 - 2³ = 2012531 is a prime.

It is a Duffinian number.

2012539 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2012531) 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, 5379 + ... + 5740.

It is an arithmetic number, because the mean of its divisors is an integer number (505960).

2^2012539 is an apocalyptic number.

2012539 is a deficient number, since it is larger than the sum of its proper divisors (11301).

2012539 is a wasteful number, since it uses less digits than its factorization.

2012539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11300.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 2012539 is about 1418.6398415384. The cubic root of 2012539 is about 126.2548591405.

It can be divided in two parts, 20125 and 39, that added together give a square (20164 = 142²).

The spelling of 2012539 in words is "two million, twelve thousand, five hundred thirty-nine".