40243373 has 4 divisors (see below), whose sum is σ = 40400220. Its totient is φ = 40086528.

The previous prime is 40243361. The next prime is 40243393. The reversal of 40243373 is 37334204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38105929 + 2137444 = 6173^2 + 1462^2 .

It is a cyclic number.

It is not a de Polignac number, because 40243373 - 2⁸ = 40243117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40243303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78038 + ... + 78551.

It is an arithmetic number, because the mean of its divisors is an integer number (10100055).

Almost surely, 2^40243373 is an apocalyptic number.

It is an amenable number.

40243373 is a deficient number, since it is larger than the sum of its proper divisors (156847).

40243373 is a wasteful number, since it uses less digits than its factorization.

40243373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156846.

The product of its (nonzero) digits is 6048, while the sum is 26.

The square root of 40243373 is about 6343.7664679589. The cubic root of 40243373 is about 342.6873906619.

Adding to 40243373 its reverse (37334204), we get a palindrome (77577577).

The spelling of 40243373 in words is "forty million, two hundred forty-three thousand, three hundred seventy-three".