40845042 has 48 divisors (see below), whose sum is σ = 104412672. Its totient is φ = 11292480.

The previous prime is 40845017. The next prime is 40845053. The reversal of 40845042 is 24054804.

It is a junction number, because it is equal to n+sod(n) for n = 40844997 and 40845015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1323 + ... + 9134.

It is an arithmetic number, because the mean of its divisors is an integer number (2175264).

Almost surely, 2^40845042 is an apocalyptic number.

40845042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

40845042 is an abundant number, since it is smaller than the sum of its proper divisors (63567630).

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

40845042 is a wasteful number, since it uses less digits than its factorization.

40845042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10503 (or 10500 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 40845042 is about 6391.0125958255. The cubic root of 40845042 is about 344.3867619058.

Adding to 40845042 its reverse (24054804), we get a palindrome (64899846).

The spelling of 40845042 in words is "forty million, eight hundred forty-five thousand, forty-two".