42442340 has 24 divisors (see below), whose sum is σ = 89268480. Its totient is φ = 16950368.

The previous prime is 42442307. The next prime is 42442349. The reversal of 42442340 is 4324424.

42442340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42442349) 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 7 ways as a sum of consecutive naturals, for example, 16031 + ... + 18489.

It is an arithmetic number, because the mean of its divisors is an integer number (3719520).

Almost surely, 2^42442340 is an apocalyptic number.

It is an amenable number.

42442340 is an abundant number, since it is smaller than the sum of its proper divisors (46826140).

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

42442340 is a wasteful number, since it uses less digits than its factorization.

42442340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331 (or 3329 counting only the distinct ones).

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

The square root of 42442340 is about 6514.7785841117. The cubic root of 42442340 is about 348.8187113836.

Adding to 42442340 its reverse (4324424), we get a palindrome (46766764).

The spelling of 42442340 in words is "forty-two million, four hundred forty-two thousand, three hundred forty".