42984390 has 16 divisors (see below), whose sum is σ = 103162608. Its totient is φ = 11462496.

The previous prime is 42984373. The next prime is 42984397. The reversal of 42984390 is 9348924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42984397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716377 + ... + 716436.

It is an arithmetic number, because the mean of its divisors is an integer number (6447663).

Almost surely, 2^42984390 is an apocalyptic number.

42984390 is an abundant number, since it is smaller than the sum of its proper divisors (60178218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42984390 is a wasteful number, since it uses less digits than its factorization.

42984390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432823.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 42984390 is about 6556.2481649187. The cubic root of 42984390 is about 350.2974070753.

The spelling of 42984390 in words is "forty-two million, nine hundred eighty-four thousand, three hundred ninety".