242748515 has 4 divisors (see below), whose sum is σ = 291298224. Its totient is φ = 194198808.

The previous prime is 242748511. The next prime is 242748529. The reversal of 242748515 is 515847242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242748515 - 2² = 242748511 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (242748511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24274847 + ... + 24274856.

It is an arithmetic number, because the mean of its divisors is an integer number (72824556).

Almost surely, 2^242748515 is an apocalyptic number.

242748515 is a deficient number, since it is larger than the sum of its proper divisors (48549709).

242748515 is an equidigital number, since it uses as much as digits as its factorization.

242748515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48549708.

The product of its digits is 89600, while the sum is 38.

The square root of 242748515 is about 15580.3887948921. The cubic root of 242748515 is about 623.8098010544.

The spelling of 242748515 in words is "two hundred forty-two million, seven hundred forty-eight thousand, five hundred fifteen".