43240973 has 2 divisors, whose sum is σ = 43240974. Its totient is φ = 43240972.

The previous prime is 43240961. The next prime is 43240991. The reversal of 43240973 is 37904234.

43240973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31393609 + 11847364 = 5603^2 + 3442^2 .

It is a cyclic number.

It is not a de Polignac number, because 43240973 - 2¹⁸ = 42978829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43240933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21620486 + 21620487.

It is an arithmetic number, because the mean of its divisors is an integer number (21620487).

Almost surely, 2^43240973 is an apocalyptic number.

It is an amenable number.

43240973 is a deficient number, since it is larger than the sum of its proper divisors (1).

43240973 is an equidigital number, since it uses as much as digits as its factorization.

43240973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 43240973 is about 6575.7868730670. The cubic root of 43240973 is about 350.9930248098.

The spelling of 43240973 in words is "forty-three million, two hundred forty thousand, nine hundred seventy-three".