242509753 has 2 divisors, whose sum is σ = 242509754. Its totient is φ = 242509752.

The previous prime is 242509741. The next prime is 242509819. The reversal of 242509753 is 357905242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189117504 + 53392249 = 13752^2 + 7307^2 .

It is a cyclic number.

It is not a de Polignac number, because 242509753 - 2⁵ = 242509721 is a prime.

It is not a weakly prime, because it can be changed into another prime (242509703) 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 as a sum of consecutive naturals, namely, 121254876 + 121254877.

It is an arithmetic number, because the mean of its divisors is an integer number (121254877).

Almost surely, 2^242509753 is an apocalyptic number.

It is an amenable number.

242509753 is a deficient number, since it is larger than the sum of its proper divisors (1).

242509753 is an equidigital number, since it uses as much as digits as its factorization.

242509753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 242509753 is about 15572.7246492064. The cubic root of 242509753 is about 623.6052121826.

The spelling of 242509753 in words is "two hundred forty-two million, five hundred nine thousand, seven hundred fifty-three".