424400243 has 2 divisors, whose sum is σ = 424400244. Its totient is φ = 424400242.

The previous prime is 424400237. The next prime is 424400279. The reversal of 424400243 is 342004424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 424400243 - 2¹⁴ = 424383859 is a prime.

It is not a weakly prime, because it can be changed into another prime (424400213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212200121 + 212200122.

It is an arithmetic number, because the mean of its divisors is an integer number (212200122).

Almost surely, 2^424400243 is an apocalyptic number.

424400243 is a deficient number, since it is larger than the sum of its proper divisors (1).

424400243 is an equidigital number, since it uses as much as digits as its factorization.

424400243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 424400243 is about 20600.9767486884. The cubic root of 424400243 is about 751.4934644077.

Adding to 424400243 its reverse (342004424), we get a palindrome (766404667).

The spelling of 424400243 in words is "four hundred twenty-four million, four hundred thousand, two hundred forty-three".