424128571 has 2 divisors, whose sum is σ = 424128572. Its totient is φ = 424128570.

The previous prime is 424128569. The next prime is 424128581. The reversal of 424128571 is 175821424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 424128571 - 2¹ = 424128569 is a prime.

Together with 424128569, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (424128541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212064285 + 212064286.

It is an arithmetic number, because the mean of its divisors is an integer number (212064286).

Almost surely, 2^424128571 is an apocalyptic number.

424128571 is a deficient number, since it is larger than the sum of its proper divisors (1).

424128571 is an equidigital number, since it uses as much as digits as its factorization.

424128571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 34.

The square root of 424128571 is about 20594.3820252029. The cubic root of 424128571 is about 751.3330786128. Note that the first 3 decimals are identical.

Adding to 424128571 its reverse (175821424), we get a palindrome (599949995).

The spelling of 424128571 in words is "four hundred twenty-four million, one hundred twenty-eight thousand, five hundred seventy-one".