242833809 has 4 divisors (see below), whose sum is σ = 323778416. Its totient is φ = 161889204.

The previous prime is 242833739. The next prime is 242833841. The reversal of 242833809 is 908338242.

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 242833809 - 2¹³ = 242825617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242833709) 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, 40472299 + ... + 40472304.

It is an arithmetic number, because the mean of its divisors is an integer number (80944604).

Almost surely, 2^242833809 is an apocalyptic number.

It is an amenable number.

242833809 is a deficient number, since it is larger than the sum of its proper divisors (80944607).

242833809 is an equidigital number, since it uses as much as digits as its factorization.

242833809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80944606.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 242833809 is about 15583.1257775839. The cubic root of 242833809 is about 623.8828547147.

The spelling of 242833809 in words is "two hundred forty-two million, eight hundred thirty-three thousand, eight hundred nine".