42773644 has 12 divisors (see below), whose sum is σ = 75166168. Its totient is φ = 21297600.

The previous prime is 42773623. The next prime is 42773659. The reversal of 42773644 is 44637724.

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, 21222 + ... + 23149.

Almost surely, 2^42773644 is an apocalyptic number.

It is an amenable number.

42773644 is a deficient number, since it is larger than the sum of its proper divisors (32392524).

42773644 is a wasteful number, since it uses less digits than its factorization.

42773644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44616 (or 44614 counting only the distinct ones).

The product of its digits is 112896, while the sum is 37.

The square root of 42773644 is about 6540.1562672462. The cubic root of 42773644 is about 349.7239837464.

It can be divided in two parts, 4277 and 3644, that added together give a square (7921 = 89²).

The spelling of 42773644 in words is "forty-two million, seven hundred seventy-three thousand, six hundred forty-four".