42000571 has 2 divisors, whose sum is σ = 42000572. Its totient is φ = 42000570.

The previous prime is 42000559. The next prime is 42000589. The reversal of 42000571 is 17500024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42000571 - 2⁹ = 42000059 is a prime.

It is not a weakly prime, because it can be changed into another prime (42000521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21000285 + 21000286.

It is an arithmetic number, because the mean of its divisors is an integer number (21000286).

Almost surely, 2^42000571 is an apocalyptic number.

42000571 is a deficient number, since it is larger than the sum of its proper divisors (1).

42000571 is an equidigital number, since it uses as much as digits as its factorization.

42000571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 42000571 is about 6480.7847518645. The cubic root of 42000571 is about 347.6042397285.

Adding to 42000571 its reverse (17500024), we get a palindrome (59500595).

The spelling of 42000571 in words is "forty-two million, five hundred seventy-one", and thus it is an aban number.