42040305071 has 2 divisors, whose sum is σ = 42040305072. Its totient is φ = 42040305070.

The previous prime is 42040305053. The next prime is 42040305077. The reversal of 42040305071 is 17050304024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42040305071 - 2⁶ = 42040305007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42040305071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42040305077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21020152535 + 21020152536.

It is an arithmetic number, because the mean of its divisors is an integer number (21020152536).

Almost surely, 2^42040305071 is an apocalyptic number.

42040305071 is a deficient number, since it is larger than the sum of its proper divisors (1).

42040305071 is an equidigital number, since it uses as much as digits as its factorization.

42040305071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 26.

Adding to 42040305071 its reverse (17050304024), we get a palindrome (59090609095).

The spelling of 42040305071 in words is "forty-two billion, forty million, three hundred five thousand, seventy-one".