40342573 has 2 divisors, whose sum is σ = 40342574. Its totient is φ = 40342572.

The previous prime is 40342559. The next prime is 40342633. The reversal of 40342573 is 37524304.

40342573 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., 37234404 + 3108169 = 6102^2 + 1763^2 .

It is a cyclic number.

It is not a de Polignac number, because 40342573 - 2⁵ = 40342541 is a prime.

It is a zygodrome in base 7.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40342553) 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, 20171286 + 20171287.

It is an arithmetic number, because the mean of its divisors is an integer number (20171287).

Almost surely, 2^40342573 is an apocalyptic number.

It is an amenable number.

40342573 is a deficient number, since it is larger than the sum of its proper divisors (1).

40342573 is an equidigital number, since it uses as much as digits as its factorization.

40342573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 40342573 is about 6351.5803545260. The cubic root of 40342573 is about 342.9687346660.

Adding to 40342573 its reverse (37524304), we get a palindrome (77866877).

The spelling of 40342573 in words is "forty million, three hundred forty-two thousand, five hundred seventy-three".