42243320117 has 2 divisors, whose sum is σ = 42243320118. Its totient is φ = 42243320116.

The previous prime is 42243320101. The next prime is 42243320123. The reversal of 42243320117 is 71102334224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27162006481 + 15081313636 = 164809^2 + 122806^2 .

It is a cyclic number.

It is not a de Polignac number, because 42243320117 - 2⁴ = 42243320101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42243320117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42243380117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21121660058 + 21121660059.

It is an arithmetic number, because the mean of its divisors is an integer number (21121660059).

Almost surely, 2^42243320117 is an apocalyptic number.

It is an amenable number.

42243320117 is a deficient number, since it is larger than the sum of its proper divisors (1).

42243320117 is an equidigital number, since it uses as much as digits as its factorization.

42243320117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 29.

The spelling of 42243320117 in words is "forty-two billion, two hundred forty-three million, three hundred twenty thousand, one hundred seventeen".