242448362509 has 4 divisors (see below), whose sum is σ = 242542373760. Its totient is φ = 242354351260.

The previous prime is 242448362503. The next prime is 242448362543. The reversal of 242448362509 is 905263844242.

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: 905263844242 = 2 ⋅452631922121.

It is a cyclic number.

It is not a de Polignac number, because 242448362509 - 2³ = 242448362501 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 (242448362501) 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, 47001757 + ... + 47006914.

It is an arithmetic number, because the mean of its divisors is an integer number (60635593440).

Almost surely, 2^242448362509 is an apocalyptic number.

It is an amenable number.

242448362509 is a deficient number, since it is larger than the sum of its proper divisors (94011251).

242448362509 is an equidigital number, since it uses as much as digits as its factorization.

242448362509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94011250.

The product of its (nonzero) digits is 3317760, while the sum is 49.

The spelling of 242448362509 in words is "two hundred forty-two billion, four hundred forty-eight million, three hundred sixty-two thousand, five hundred nine".