242808413 has 2 divisors, whose sum is σ = 242808414. Its totient is φ = 242808412.

The previous prime is 242808409. The next prime is 242808431. The reversal of 242808413 is 314808242.

Together with next prime (242808431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165842884 + 76965529 = 12878^2 + 8773^2 .

It is a cyclic number.

It is not a de Polignac number, because 242808413 - 2² = 242808409 is a prime.

It is a Chen prime.

It is equal to p_13306955 and since 242808413 and 13306955 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242808413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242808443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121404206 + 121404207.

It is an arithmetic number, because the mean of its divisors is an integer number (121404207).

Almost surely, 2^242808413 is an apocalyptic number.

It is an amenable number.

242808413 is a deficient number, since it is larger than the sum of its proper divisors (1).

242808413 is an equidigital number, since it uses as much as digits as its factorization.

242808413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 242808413 is about 15582.3109005051. The cubic root of 242808413 is about 623.8611050231.

The spelling of 242808413 in words is "two hundred forty-two million, eight hundred eight thousand, four hundred thirteen".