42538759 has 2 divisors, whose sum is σ = 42538760. Its totient is φ = 42538758.

The previous prime is 42538757. The next prime is 42538817. The reversal of 42538759 is 95783524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42538759 - 2¹ = 42538757 is a prime.

Together with 42538757, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42538751) 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, 21269379 + 21269380.

It is an arithmetic number, because the mean of its divisors is an integer number (21269380).

Almost surely, 2^42538759 is an apocalyptic number.

42538759 is a deficient number, since it is larger than the sum of its proper divisors (1).

42538759 is an equidigital number, since it uses as much as digits as its factorization.

42538759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 43.

The square root of 42538759 is about 6522.1744073583. The cubic root of 42538759 is about 349.0826562625.

The spelling of 42538759 in words is "forty-two million, five hundred thirty-eight thousand, seven hundred fifty-nine".