42709340767 has 2 divisors, whose sum is σ = 42709340768. Its totient is φ = 42709340766.

The previous prime is 42709340743. The next prime is 42709340777. The reversal of 42709340767 is 76704390724.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42709340767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42709340767.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42709340777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21354670383 + 21354670384.

It is an arithmetic number, because the mean of its divisors is an integer number (21354670384).

Almost surely, 2^42709340767 is an apocalyptic number.

42709340767 is a deficient number, since it is larger than the sum of its proper divisors (1).

42709340767 is an equidigital number, since it uses as much as digits as its factorization.

42709340767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 49.

The spelling of 42709340767 in words is "forty-two billion, seven hundred nine million, three hundred forty thousand, seven hundred sixty-seven".