242730045 has 24 divisors (see below), whose sum is σ = 430997112. Its totient is φ = 126297600.

The previous prime is 242730023. The next prime is 242730083. The reversal of 242730045 is 540037242.

It can be written as a sum of positive squares in 4 ways, for example, as 2913849 + 239816196 = 1707^2 + 15486^2 .

It is not a de Polignac number, because 242730045 - 2⁵ = 242730013 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 63936 + ... + 67625.

It is an arithmetic number, because the mean of its divisors is an integer number (17958213).

Almost surely, 2^242730045 is an apocalyptic number.

It is an amenable number.

242730045 is a deficient number, since it is larger than the sum of its proper divisors (188267067).

242730045 is a wasteful number, since it uses less digits than its factorization.

242730045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131613 (or 131610 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 242730045 is about 15579.7960512967. The cubic root of 242730045 is about 623.7939793864.

Adding to 242730045 its reverse (540037242), we get a palindrome (782767287).

The spelling of 242730045 in words is "two hundred forty-two million, seven hundred thirty thousand, forty-five".