242323309 has 4 divisors (see below), whose sum is σ = 242364060. Its totient is φ = 242282560.

The previous prime is 242323307. The next prime is 242323327. The reversal of 242323309 is 903323242.

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 180150084 + 62173225 = 13422^2 + 7885^2 .

It is a cyclic number.

It is not a de Polignac number, because 242323309 - 2¹ = 242323307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242323303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9532 + ... + 23989.

It is an arithmetic number, because the mean of its divisors is an integer number (60591015).

Almost surely, 2^242323309 is an apocalyptic number.

It is an amenable number.

242323309 is a deficient number, since it is larger than the sum of its proper divisors (40751).

242323309 is an equidigital number, since it uses as much as digits as its factorization.

242323309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40750.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 242323309 is about 15566.7372625094. The cubic root of 242323309 is about 623.4453598367.

The spelling of 242323309 in words is "two hundred forty-two million, three hundred twenty-three thousand, three hundred nine".