40502443 has 4 divisors (see below), whose sum is σ = 40589640. Its totient is φ = 40415248.

The previous prime is 40502437. The next prime is 40502467. The reversal of 40502443 is 34420504.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40502443 - 2⁵ = 40502411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40506443) 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, 42898 + ... + 43831.

It is an arithmetic number, because the mean of its divisors is an integer number (10147410).

Almost surely, 2^40502443 is an apocalyptic number.

40502443 is a deficient number, since it is larger than the sum of its proper divisors (87197).

40502443 is an equidigital number, since it uses as much as digits as its factorization.

40502443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87196.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 40502443 is about 6364.1529679919. The cubic root of 40502443 is about 343.4211776565.

Adding to 40502443 its reverse (34420504), we get a palindrome (74922947).

The spelling of 40502443 in words is "forty million, five hundred two thousand, four hundred forty-three".