40442330 has 16 divisors (see below), whose sum is σ = 73281024. Its totient is φ = 16069200.

The previous prime is 40442323. The next prime is 40442341. The reversal of 40442330 is 3324404.

It is a happy number.

40442330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 11882 + ... + 14901.

It is an arithmetic number, because the mean of its divisors is an integer number (4580064).

Almost surely, 2^40442330 is an apocalyptic number.

40442330 is a deficient number, since it is larger than the sum of its proper divisors (32838694).

40442330 is a wasteful number, since it uses less digits than its factorization.

40442330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26941.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 40442330 is about 6359.4284334365. The cubic root of 40442330 is about 343.2511936807.

Adding to 40442330 its reverse (3324404), we get a palindrome (43766734).

The spelling of 40442330 in words is "forty million, four hundred forty-two thousand, three hundred thirty".