42444856 has 16 divisors (see below), whose sum is σ = 79653240. Its totient is φ = 21204000.

The previous prime is 42444839. The next prime is 42444877. The reversal of 42444856 is 65844424.

It is a happy number.

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, 16830 + ... + 19186.

Almost surely, 2^42444856 is an apocalyptic number.

It is an amenable number.

42444856 is a deficient number, since it is larger than the sum of its proper divisors (37208384).

42444856 is a wasteful number, since it uses less digits than its factorization.

42444856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614 (or 4610 counting only the distinct ones).

The product of its digits is 122880, while the sum is 37.

The square root of 42444856 is about 6514.9716806752. The cubic root of 42444856 is about 348.8256039547.

The spelling of 42444856 in words is "forty-two million, four hundred forty-four thousand, eight hundred fifty-six".