42404444 has 12 divisors (see below), whose sum is σ = 74681544. Its totient is φ = 21066864.

The previous prime is 42404431. The next prime is 42404471. The reversal of 42404444 is 44440424.

It is a happy number.

42404444 is a modest number, since divided by 4444 gives 4240 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33134 + ... + 34389.

It is an arithmetic number, because the mean of its divisors is an integer number (6223462).

Almost surely, 2^42404444 is an apocalyptic number.

It is an amenable number.

42404444 is a deficient number, since it is larger than the sum of its proper divisors (32277100).

42404444 is a wasteful number, since it uses less digits than its factorization.

42404444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67684 (or 67682 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

The square root of 42404444 is about 6511.8694704363. The cubic root of 42404444 is about 348.7148624902.

Adding to 42404444 its reverse (44440424), we get a palindrome (86844868).

The spelling of 42404444 in words is "forty-two million, four hundred four thousand, four hundred forty-four".