42540059 has 2 divisors, whose sum is σ = 42540060. Its totient is φ = 42540058.

The previous prime is 42540037. The next prime is 42540067. The reversal of 42540059 is 95004524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42540059 - 2¹² = 42535963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42540019) 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, 21270029 + 21270030.

It is an arithmetic number, because the mean of its divisors is an integer number (21270030).

Almost surely, 2^42540059 is an apocalyptic number.

42540059 is a deficient number, since it is larger than the sum of its proper divisors (1).

42540059 is an equidigital number, since it uses as much as digits as its factorization.

42540059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 42540059 is about 6522.2740666120. The cubic root of 42540059 is about 349.0862122574.

The spelling of 42540059 in words is "forty-two million, five hundred forty thousand, fifty-nine".