242631143 has 2 divisors, whose sum is σ = 242631144. Its totient is φ = 242631142.

The previous prime is 242631131. The next prime is 242631217. The reversal of 242631143 is 341136242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242631143 - 2¹⁰ = 242630119 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242631113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121315571 + 121315572.

It is an arithmetic number, because the mean of its divisors is an integer number (121315572).

Almost surely, 2^242631143 is an apocalyptic number.

242631143 is a deficient number, since it is larger than the sum of its proper divisors (1).

242631143 is an equidigital number, since it uses as much as digits as its factorization.

242631143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The square root of 242631143 is about 15576.6216812247. The cubic root of 242631143 is about 623.7092448502.

Adding to 242631143 its reverse (341136242), we get a palindrome (583767385).

The spelling of 242631143 in words is "two hundred forty-two million, six hundred thirty-one thousand, one hundred forty-three".