42444140 has 24 divisors (see below), whose sum is σ = 89737200. Its totient is φ = 16862528.

The previous prime is 42444133. The next prime is 42444151. The reversal of 42444140 is 4144424.

42444140 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, 4142 + ... + 10101.

It is an arithmetic number, because the mean of its divisors is an integer number (3739050).

Almost surely, 2^42444140 is an apocalyptic number.

It is an amenable number.

42444140 is an abundant number, since it is smaller than the sum of its proper divisors (47293060).

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

42444140 is a wasteful number, since it uses less digits than its factorization.

42444140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14401 (or 14399 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 42444140 is about 6514.9167300895. The cubic root of 42444140 is about 348.8236425036.

Adding to 42444140 its reverse (4144424), we get a palindrome (46588564).

The spelling of 42444140 in words is "forty-two million, four hundred forty-four thousand, one hundred forty".