42440342 has 16 divisors (see below), whose sum is σ = 74304000. Its totient is φ = 17801448.

The previous prime is 42440327. The next prime is 42440351. The reversal of 42440342 is 24304424.

42440342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 31592 + ... + 32907.

It is an arithmetic number, because the mean of its divisors is an integer number (4644000).

Almost surely, 2^42440342 is an apocalyptic number.

42440342 is a deficient number, since it is larger than the sum of its proper divisors (31863658).

42440342 is a wasteful number, since it uses less digits than its factorization.

42440342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64555.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 42440342 is about 6514.6252386457. The cubic root of 42440342 is about 348.8132376773.

Adding to 42440342 its reverse (24304424), we get a palindrome (66744766).

The spelling of 42440342 in words is "forty-two million, four hundred forty thousand, three hundred forty-two".