84412420 has 24 divisors (see below), whose sum is σ = 177628248. Its totient is φ = 33696000.

The previous prime is 84412357. The next prime is 84412439. The reversal of 84412420 is 2421448.

It can be written as a sum of positive squares in 4 ways, for example, as 26378496 + 58033924 = 5136^2 + 7618^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6370 + ... + 14470.

It is an arithmetic number, because the mean of its divisors is an integer number (7401177).

Almost surely, 2^84412420 is an apocalyptic number.

It is an amenable number.

84412420 is an abundant number, since it is smaller than the sum of its proper divisors (93215828).

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

84412420 is a wasteful number, since it uses less digits than its factorization.

84412420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8631 (or 8629 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 84412420 is about 9187.6231964529. The cubic root of 84412420 is about 438.6674907008.

Adding to 84412420 its reverse (2421448), we get a palindrome (86833868).

The spelling of 84412420 in words is "eighty-four million, four hundred twelve thousand, four hundred twenty".