42530699173 has 2 divisors, whose sum is σ = 42530699174. Its totient is φ = 42530699172.

The previous prime is 42530699143. The next prime is 42530699203. The reversal of 42530699173 is 37199603524.

It is a balanced prime because it is at equal distance from previous prime (42530699143) and next prime (42530699203).

It can be written as a sum of positive squares in only one way, i.e., 34909932964 + 7620766209 = 186842^2 + 87297^2 .

It is a cyclic number.

It is not a de Polignac number, because 42530699173 - 2¹³ = 42530690981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42530699143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21265349586 + 21265349587.

It is an arithmetic number, because the mean of its divisors is an integer number (21265349587).

Almost surely, 2^42530699173 is an apocalyptic number.

It is an amenable number.

42530699173 is a deficient number, since it is larger than the sum of its proper divisors (1).

42530699173 is an equidigital number, since it uses as much as digits as its factorization.

42530699173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 42530699173 in words is "forty-two billion, five hundred thirty million, six hundred ninety-nine thousand, one hundred seventy-three".