42984278 has 16 divisors (see below), whose sum is σ = 65183184. Its totient is φ = 21258240.

The previous prime is 42984257. The next prime is 42984281. The reversal of 42984278 is 87248924.

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, 123701 + ... + 124047.

It is an arithmetic number, because the mean of its divisors is an integer number (4073949).

Almost surely, 2^42984278 is an apocalyptic number.

42984278 is a deficient number, since it is larger than the sum of its proper divisors (22198906).

42984278 is a wasteful number, since it uses less digits than its factorization.

42984278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847.

The product of its digits is 258048, while the sum is 44.

The square root of 42984278 is about 6556.2396234427. The cubic root of 42984278 is about 350.2971028304.

The spelling of 42984278 in words is "forty-two million, nine hundred eighty-four thousand, two hundred seventy-eight".