40504145 has 12 divisors (see below), whose sum is σ = 53426100. Its totient is φ = 29457120.

The previous prime is 40504133. The next prime is 40504171. The reversal of 40504145 is 54140504.

It can be written as a sum of positive squares in 2 ways, for example, as 28344976 + 12159169 = 5324^2 + 3487^2 .

It is not a de Polignac number, because 40504145 - 2¹² = 40500049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40504145.

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 11 ways as a sum of consecutive naturals, for example, 32870 + ... + 34079.

It is an arithmetic number, because the mean of its divisors is an integer number (4452175).

Almost surely, 2^40504145 is an apocalyptic number.

It is an amenable number.

40504145 is a deficient number, since it is larger than the sum of its proper divisors (12921955).

40504145 is a wasteful number, since it uses less digits than its factorization.

40504145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66976 (or 66965 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 40504145 is about 6364.2866843033. The cubic root of 40504145 is about 343.4259880220.

Adding to 40504145 its reverse (54140504), we get a palindrome (94644649).

The spelling of 40504145 in words is "forty million, five hundred four thousand, one hundred forty-five".