42021445284 has 216 divisors, whose sum is σ = 134035399680. Its totient is φ = 11002013568.

The previous prime is 42021445253. The next prime is 42021445289. The reversal of 42021445284 is 48254412024.

42021445284 is a `hidden beast` number, since 4 + 202 + 1 + 445 + 2 + 8 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (42021445289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3180957 + ... + 3194139.

Almost surely, 2^42021445284 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 42021445284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67017699840).

42021445284 is an abundant number, since it is smaller than the sum of its proper divisors (92013954396).

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

42021445284 is a wasteful number, since it uses less digits than its factorization.

42021445284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13359 (or 13347 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 36.

The spelling of 42021445284 in words is "forty-two billion, twenty-one million, four hundred forty-five thousand, two hundred eighty-four".