42231559 has 2 divisors, whose sum is σ = 42231560. Its totient is φ = 42231558.

The previous prime is 42231499. The next prime is 42231571. The reversal of 42231559 is 95513224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42231559 - 2²³ = 33842951 is a prime.

It is a Chen prime.

It is equal to p_2560828 and since 42231559 and 2560828 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42231559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42231589) 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, 21115779 + 21115780.

It is an arithmetic number, because the mean of its divisors is an integer number (21115780).

Almost surely, 2^42231559 is an apocalyptic number.

42231559 is a deficient number, since it is larger than the sum of its proper divisors (1).

42231559 is an equidigital number, since it uses as much as digits as its factorization.

42231559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 42231559 is about 6498.5813067161. The cubic root of 42231559 is about 348.2403077724.

The spelling of 42231559 in words is "forty-two million, two hundred thirty-one thousand, five hundred fifty-nine".