2442009 has 4 divisors (see below), whose sum is σ = 3256016. Its totient is φ = 1628004.

The previous prime is 2441987. The next prime is 2442017. The reversal of 2442009 is 9002442.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2442009 - 2¹³ = 2433817 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2442019) 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, 406999 + ... + 407004.

It is an arithmetic number, because the mean of its divisors is an integer number (814004).

2^2442009 is an apocalyptic number.

It is an amenable number.

2442009 is a deficient number, since it is larger than the sum of its proper divisors (814007).

2442009 is an equidigital number, since it uses as much as digits as its factorization.

2442009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814006.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2442009 is about 1562.6928680966. The cubic root of 2442009 is about 134.6632484782.

The spelling of 2442009 in words is "two million, four hundred forty-two thousand, nine".