42784372 has 12 divisors (see below), whose sum is σ = 75645220. Its totient is φ = 21171456.

The previous prime is 42784327. The next prime is 42784397. The reversal of 42784372 is 27348724.

42784372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 31854736 + 10929636 = 5644^2 + 3306^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 54747 + ... + 55522.

Almost surely, 2^42784372 is an apocalyptic number.

It is an amenable number.

42784372 is a deficient number, since it is larger than the sum of its proper divisors (32860848).

42784372 is a wasteful number, since it uses less digits than its factorization.

42784372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110370 (or 110368 counting only the distinct ones).

The product of its digits is 75264, while the sum is 37.

The square root of 42784372 is about 6540.9763797158. The cubic root of 42784372 is about 349.7532192360.

The spelling of 42784372 in words is "forty-two million, seven hundred eighty-four thousand, three hundred seventy-two".