40045424 has 30 divisors (see below), whose sum is σ = 79035120. Its totient is φ = 19655968.

The previous prime is 40045409. The next prime is 40045441. The reversal of 40045424 is 42454004.

It is a self number, because there is not a number n which added to its sum of digits gives 40045424.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 55337 + ... + 56055.

It is an arithmetic number, because the mean of its divisors is an integer number (2634504).

Almost surely, 2^40045424 is an apocalyptic number.

It is an amenable number.

40045424 is a deficient number, since it is larger than the sum of its proper divisors (38989696).

40045424 is an equidigital number, since it uses as much as digits as its factorization.

40045424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 40045424 is about 6328.1453839178. The cubic root of 40045424 is about 342.1245969416.

Adding to 40045424 its reverse (42454004), we get a palindrome (82499428).

The spelling of 40045424 in words is "forty million, forty-five thousand, four hundred twenty-four".