42719263117 has 2 divisors, whose sum is σ = 42719263118. Its totient is φ = 42719263116.

The previous prime is 42719263109. The next prime is 42719263133. The reversal of 42719263117 is 71136291724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21505049316 + 21214213801 = 146646^2 + 145651^2 .

It is a cyclic number.

It is not a de Polignac number, because 42719263117 - 2³ = 42719263109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42719263817) 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, 21359631558 + 21359631559.

It is an arithmetic number, because the mean of its divisors is an integer number (21359631559).

Almost surely, 2^42719263117 is an apocalyptic number.

It is an amenable number.

42719263117 is a deficient number, since it is larger than the sum of its proper divisors (1).

42719263117 is an equidigital number, since it uses as much as digits as its factorization.

42719263117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The spelling of 42719263117 in words is "forty-two billion, seven hundred nineteen million, two hundred sixty-three thousand, one hundred seventeen".