84054420 has 144 divisors (see below), whose sum is σ = 270466560. Its totient is φ = 21086208.

The previous prime is 84054419. The next prime is 84054427. The reversal of 84054420 is 2445048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84054427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 326932 + ... + 327188.

It is an arithmetic number, because the mean of its divisors is an integer number (1878240).

Almost surely, 2^84054420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84054420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135233280).

84054420 is an abundant number, since it is smaller than the sum of its proper divisors (186412140).

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

84054420 is a wasteful number, since it uses less digits than its factorization.

84054420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 84054420 is about 9168.1197636157. The cubic root of 84054420 is about 438.0464703306.

Adding to 84054420 its reverse (2445048), we get a palindrome (86499468).

The spelling of 84054420 in words is "eighty-four million, fifty-four thousand, four hundred twenty".