41209540 has 24 divisors (see below), whose sum is σ = 89332992. Its totient is φ = 15951840.

The previous prime is 41209529. The next prime is 41209543. The reversal of 41209540 is 4590214.

41209540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (41209543) 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 in 7 ways as a sum of consecutive naturals, for example, 32614 + ... + 33853.

It is an arithmetic number, because the mean of its divisors is an integer number (3722208).

Almost surely, 2^41209540 is an apocalyptic number.

It is an amenable number.

41209540 is an abundant number, since it is smaller than the sum of its proper divisors (48123452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

41209540 is a wasteful number, since it uses less digits than its factorization.

41209540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66507 (or 66505 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 41209540 is about 6419.4657098547. The cubic root of 41209540 is about 345.4081565764.

Adding to 41209540 its reverse (4590214), we get a palindrome (45799754).

The spelling of 41209540 in words is "forty-one million, two hundred nine thousand, five hundred forty".