42505384027 has 2 divisors, whose sum is σ = 42505384028. Its totient is φ = 42505384026.

The previous prime is 42505383967. The next prime is 42505384049. The reversal of 42505384027 is 72048350524.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42505384027 is a prime.

It is not a weakly prime, because it can be changed into another prime (42505384067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21252692013 + 21252692014.

It is an arithmetic number, because the mean of its divisors is an integer number (21252692014).

Almost surely, 2^42505384027 is an apocalyptic number.

42505384027 is a deficient number, since it is larger than the sum of its proper divisors (1).

42505384027 is an equidigital number, since it uses as much as digits as its factorization.

42505384027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 42505384027 in words is "forty-two billion, five hundred five million, three hundred eighty-four thousand, twenty-seven".