2442409 has 4 divisors (see below), whose sum is σ = 2526660. Its totient is φ = 2358160.

The previous prime is 2442403. The next prime is 2442413. The reversal of 2442409 is 9042442.

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 2039184 + 403225 = 1428^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 2442409 - 2¹³ = 2434217 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2442403) 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, 42082 + ... + 42139.

It is an arithmetic number, because the mean of its divisors is an integer number (631665).

2^2442409 is an apocalyptic number.

2442409 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2442409 is a deficient number, since it is larger than the sum of its proper divisors (84251).

2442409 is an equidigital number, since it uses as much as digits as its factorization.

2442409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84250.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 2442409 is about 1562.8208470583. The cubic root of 2442409 is about 134.6706006704.

The spelling of 2442409 in words is "two million, four hundred forty-two thousand, four hundred nine".