40442043 has 16 divisors (see below), whose sum is σ = 55351296. Its totient is φ = 26253120.

The previous prime is 40442009. The next prime is 40442057. The reversal of 40442043 is 34024404.

40442043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40442043 - 2¹⁷ = 40310971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40442063) 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 15 ways as a sum of consecutive naturals, for example, 32238 + ... + 33468.

It is an arithmetic number, because the mean of its divisors is an integer number (3459456).

Almost surely, 2^40442043 is an apocalyptic number.

40442043 is a deficient number, since it is larger than the sum of its proper divisors (14909253).

40442043 is a wasteful number, since it uses less digits than its factorization.

40442043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 40442043 is about 6359.4058684755. The cubic root of 40442043 is about 343.2503817153.

Adding to 40442043 its reverse (34024404), we get a palindrome (74466447).

The spelling of 40442043 in words is "forty million, four hundred forty-two thousand, forty-three".