242468009 has 4 divisors (see below), whose sum is σ = 277106304. Its totient is φ = 207829716.

The previous prime is 242468003. The next prime is 242468029. The reversal of 242468009 is 900864242.

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, and also an emirpimes, since its reverse is a distinct semiprime: 900864242 = 2 ⋅450432121.

It is a cyclic number.

It is not a de Polignac number, because 242468009 - 2²⁰ = 241419433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242468009.

It is not an unprimeable number, because it can be changed into a prime (242468003) 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, 17319137 + ... + 17319150.

It is an arithmetic number, because the mean of its divisors is an integer number (69276576).

Almost surely, 2^242468009 is an apocalyptic number.

It is an amenable number.

242468009 is a deficient number, since it is larger than the sum of its proper divisors (34638295).

242468009 is an equidigital number, since it uses as much as digits as its factorization.

242468009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34638294.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 242468009 is about 15571.3842994128. The cubic root of 242468009 is about 623.5694290585.

The spelling of 242468009 in words is "two hundred forty-two million, four hundred sixty-eight thousand, nine".