42000044 has 12 divisors (see below), whose sum is σ = 73596600. Its totient is φ = 20972448.

The previous prime is 42000037. The next prime is 42000059. The reversal of 42000044 is 44000024.

It is a junction number, because it is equal to n+sod(n) for n = 41999992 and 42000028.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3254 + ... + 9725.

It is an arithmetic number, because the mean of its divisors is an integer number (6133050).

Almost surely, 2^42000044 is an apocalyptic number.

It is an amenable number.

42000044 is a deficient number, since it is larger than the sum of its proper divisors (31596556).

42000044 is a wasteful number, since it uses less digits than its factorization.

42000044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13792 (or 13790 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 42000044 is about 6480.7440930807. The cubic root of 42000044 is about 347.6027858737.

Adding to 42000044 its reverse (44000024), we get a palindrome (86000068).

The spelling of 42000044 in words is "forty-two million, forty-four", and thus it is an aban number and an eban number.