2542005 has 12 divisors (see below), whose sum is σ = 4406220. Its totient is φ = 1355712.

The previous prime is 2541997. The next prime is 2542009. The reversal of 2542005 is 5002452.

It can be written as a sum of positive squares in 2 ways, for example, as 815409 + 1726596 = 903^2 + 1314^2 .

It is not a de Polignac number, because 2542005 - 2³ = 2541997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2542009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28200 + ... + 28289.

It is an arithmetic number, because the mean of its divisors is an integer number (367185).

2^2542005 is an apocalyptic number.

It is an amenable number.

2542005 is a deficient number, since it is larger than the sum of its proper divisors (1864215).

2542005 is a wasteful number, since it uses less digits than its factorization.

2542005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56500 (or 56497 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2542005 is about 1594.3666454113. The cubic root of 2542005 is about 136.4767903218.

Adding to 2542005 its reverse (5002452), we get a palindrome (7544457).

The spelling of 2542005 in words is "two million, five hundred forty-two thousand, five".