42240433973 has 2 divisors, whose sum is σ = 42240433974. Its totient is φ = 42240433972.

The previous prime is 42240433957. The next prime is 42240433993. The reversal of 42240433973 is 37933404224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26319546289 + 15920887684 = 162233^2 + 126178^2 .

It is a cyclic number.

It is not a de Polignac number, because 42240433973 - 2⁴ = 42240433957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42240433973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42240433993) 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, 21120216986 + 21120216987.

It is an arithmetic number, because the mean of its divisors is an integer number (21120216987).

Almost surely, 2^42240433973 is an apocalyptic number.

It is an amenable number.

42240433973 is a deficient number, since it is larger than the sum of its proper divisors (1).

42240433973 is an equidigital number, since it uses as much as digits as its factorization.

42240433973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 41.

The spelling of 42240433973 in words is "forty-two billion, two hundred forty million, four hundred thirty-three thousand, nine hundred seventy-three".