42912284 has 24 divisors (see below), whose sum is σ = 80156160. Its totient is φ = 20030976.

The previous prime is 42912271. The next prime is 42912299. The reversal of 42912284 is 48221924.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42912284.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6152 + ... + 11120.

It is an arithmetic number, because the mean of its divisors is an integer number (3339840).

Almost surely, 2^42912284 is an apocalyptic number.

It is an amenable number.

42912284 is a deficient number, since it is larger than the sum of its proper divisors (37243876).

42912284 is a wasteful number, since it uses less digits than its factorization.

42912284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5117 (or 5115 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 42912284 is about 6550.7468276526. The cubic root of 42912284 is about 350.1014236676.

The spelling of 42912284 in words is "forty-two million, nine hundred twelve thousand, two hundred eighty-four".