42929215117 has 2 divisors, whose sum is σ = 42929215118. Its totient is φ = 42929215116.

The previous prime is 42929215067. The next prime is 42929215159. The reversal of 42929215117 is 71151292924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22895926596 + 20033288521 = 151314^2 + 141539^2 .

It is a cyclic number.

It is not a de Polignac number, because 42929215117 - 2¹¹ = 42929213069 is a prime.

It is a super-2 number, since 2×42929215117² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42929215177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21464607558 + 21464607559.

It is an arithmetic number, because the mean of its divisors is an integer number (21464607559).

Almost surely, 2^42929215117 is an apocalyptic number.

It is an amenable number.

42929215117 is a deficient number, since it is larger than the sum of its proper divisors (1).

42929215117 is an equidigital number, since it uses as much as digits as its factorization.

42929215117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 43.

The spelling of 42929215117 in words is "forty-two billion, nine hundred twenty-nine million, two hundred fifteen thousand, one hundred seventeen".