2642005 has 4 divisors (see below), whose sum is σ = 3170412. Its totient is φ = 2113600.

The previous prime is 2641993. The next prime is 2642039. The reversal of 2642005 is 5002462.

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 1912689 + 729316 = 1383^2 + 854^2 .

It is not a de Polignac number, because 2642005 - 2⁹ = 2641493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264196 + ... + 264205.

It is an arithmetic number, because the mean of its divisors is an integer number (792603).

2^2642005 is an apocalyptic number.

It is an amenable number.

2642005 is a deficient number, since it is larger than the sum of its proper divisors (528407).

2642005 is an equidigital number, since it uses as much as digits as its factorization.

2642005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528406.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2642005 is about 1625.4245599227. The cubic root of 2642005 is about 138.2434441267.

Adding to 2642005 its reverse (5002462), we get a palindrome (7644467).

The spelling of 2642005 in words is "two million, six hundred forty-two thousand, five".