42000559 has 2 divisors, whose sum is σ = 42000560. Its totient is φ = 42000558.

The previous prime is 42000529. The next prime is 42000571. The reversal of 42000559 is 95500024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42000559 - 2¹¹ = 41998511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42000529) 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, 21000279 + 21000280.

It is an arithmetic number, because the mean of its divisors is an integer number (21000280).

Almost surely, 2^42000559 is an apocalyptic number.

42000559 is a deficient number, since it is larger than the sum of its proper divisors (1).

42000559 is an equidigital number, since it uses as much as digits as its factorization.

42000559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 42000559 is about 6480.7838260507. The cubic root of 42000559 is about 347.6042066238.

The spelling of 42000559 in words is "forty-two million, five hundred fifty-nine", and thus it is an aban number.