242145613 has 2 divisors, whose sum is σ = 242145614. Its totient is φ = 242145612.

The previous prime is 242145583. The next prime is 242145677. The reversal of 242145613 is 316541242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242051364 + 94249 = 15558^2 + 307^2 .

It is a cyclic number.

It is not a de Polignac number, because 242145613 - 2¹³ = 242137421 is a prime.

It is equal to p_13272823 and since 242145613 and 13272823 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242125613) 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, 121072806 + 121072807.

It is an arithmetic number, because the mean of its divisors is an integer number (121072807).

Almost surely, 2^242145613 is an apocalyptic number.

It is an amenable number.

242145613 is a deficient number, since it is larger than the sum of its proper divisors (1).

242145613 is an equidigital number, since it uses as much as digits as its factorization.

242145613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 28.

The square root of 242145613 is about 15561.0286613707. The cubic root of 242145613 is about 623.2929314722.

Adding to 242145613 its reverse (316541242), we get a palindrome (558686855).

The spelling of 242145613 in words is "two hundred forty-two million, one hundred forty-five thousand, six hundred thirteen".