42630743173 has 2 divisors, whose sum is σ = 42630743174. Its totient is φ = 42630743172.

The previous prime is 42630743167. The next prime is 42630743249. The reversal of 42630743173 is 37134703624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38650773604 + 3979969569 = 196598^2 + 63087^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42630743173 is a prime.

It is a super-2 number, since 2×42630743173² (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 (42630749173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21315371586 + 21315371587.

It is an arithmetic number, because the mean of its divisors is an integer number (21315371587).

Almost surely, 2^42630743173 is an apocalyptic number.

It is an amenable number.

42630743173 is a deficient number, since it is larger than the sum of its proper divisors (1).

42630743173 is an equidigital number, since it uses as much as digits as its factorization.

42630743173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 40.

The spelling of 42630743173 in words is "forty-two billion, six hundred thirty million, seven hundred forty-three thousand, one hundred seventy-three".