242543141 has 2 divisors, whose sum is σ = 242543142. Its totient is φ = 242543140.

The previous prime is 242543111. The next prime is 242543173. The reversal of 242543141 is 141345242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241926916 + 616225 = 15554^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 242543141 - 2¹⁰ = 242542117 is a prime.

It is a super-2 number, since 2×242543141² = 117654350492291762, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242543141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242543111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121271570 + 121271571.

It is an arithmetic number, because the mean of its divisors is an integer number (121271571).

Almost surely, 2^242543141 is an apocalyptic number.

It is an amenable number.

242543141 is a deficient number, since it is larger than the sum of its proper divisors (1).

242543141 is an equidigital number, since it uses as much as digits as its factorization.

242543141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 26.

The square root of 242543141 is about 15573.7966148271. The cubic root of 242543141 is about 623.6338295545.

Adding to 242543141 its reverse (141345242), we get a palindrome (383888383).

The spelling of 242543141 in words is "two hundred forty-two million, five hundred forty-three thousand, one hundred forty-one".