243000427 has 2 divisors, whose sum is σ = 243000428. Its totient is φ = 243000426.

The previous prime is 243000391. The next prime is 243000437. The reversal of 243000427 is 724000342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243000427 - 2⁷ = 243000299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243000398 and 243000407.

It is not a weakly prime, because it can be changed into another prime (243000437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121500213 + 121500214.

It is an arithmetic number, because the mean of its divisors is an integer number (121500214).

Almost surely, 2^243000427 is an apocalyptic number.

243000427 is a deficient number, since it is larger than the sum of its proper divisors (1).

243000427 is an equidigital number, since it uses as much as digits as its factorization.

243000427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 243000427 is about 15588.4709641453. The cubic root of 243000427 is about 624.0255124280.

Adding to 243000427 its reverse (724000342), we get a palindrome (967000769).

The spelling of 243000427 in words is "two hundred forty-three million, four hundred twenty-seven", and thus it is an aban number.