242643347 has 2 divisors, whose sum is σ = 242643348. Its totient is φ = 242643346.

The previous prime is 242643337. The next prime is 242643391. The reversal of 242643347 is 743346242.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242643347 is a prime.

It is a super-4 number, since 4×242643347⁴ (a number of 35 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242643337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121321673 + 121321674.

It is an arithmetic number, because the mean of its divisors is an integer number (121321674).

Almost surely, 2^242643347 is an apocalyptic number.

242643347 is a deficient number, since it is larger than the sum of its proper divisors (1).

242643347 is an equidigital number, since it uses as much as digits as its factorization.

242643347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 35.

The square root of 242643347 is about 15577.0134172119. The cubic root of 242643347 is about 623.7197019030.

Adding to 242643347 its reverse (743346242), we get a palindrome (985989589).

The spelling of 242643347 in words is "two hundred forty-two million, six hundred forty-three thousand, three hundred forty-seven".