40442015 has 8 divisors (see below), whose sum is σ = 48564960. Its totient is φ = 32330592.

The previous prime is 40442009. The next prime is 40442057. The reversal of 40442015 is 51024404.

40442015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40442015 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 10526 + ... + 13844.

It is an arithmetic number, because the mean of its divisors is an integer number (6070620).

Almost surely, 2^40442015 is an apocalyptic number.

40442015 is a deficient number, since it is larger than the sum of its proper divisors (8122945).

40442015 is a wasteful number, since it uses less digits than its factorization.

40442015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5761.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 40442015 is about 6359.4036670116. The cubic root of 40442015 is about 343.2503024989.

Adding to 40442015 its reverse (51024404), we get a palindrome (91466419).

The spelling of 40442015 in words is "forty million, four hundred forty-two thousand, fifteen".