40115042 has 24 divisors (see below), whose sum is σ = 69293232. Its totient is φ = 17271000.

The previous prime is 40115041. The next prime is 40115057. The reversal of 40115042 is 24051104.

It is a self number, because there is not a number n which added to its sum of digits gives 40115042.

It is not an unprimeable number, because it can be changed into a prime (40115041) 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 11 ways as a sum of consecutive naturals, for example, 5417 + ... + 10467.

It is an arithmetic number, because the mean of its divisors is an integer number (2887218).

Almost surely, 2^40115042 is an apocalyptic number.

40115042 is a deficient number, since it is larger than the sum of its proper divisors (29178190).

40115042 is a wasteful number, since it uses less digits than its factorization.

40115042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5102 (or 5083 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 40115042 is about 6333.6436590639. The cubic root of 40115042 is about 342.3227406059.

Adding to 40115042 its reverse (24051104), we get a palindrome (64166146).

The spelling of 40115042 in words is "forty million, one hundred fifteen thousand, forty-two".