42021544484 has 24 divisors (see below), whose sum is σ = 77460583200. Its totient is φ = 19891448640.

The previous prime is 42021544463. The next prime is 42021544489. The reversal of 42021544484 is 48444512024.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (42021544489) 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, 74114 + ... + 299225.

It is an arithmetic number, because the mean of its divisors is an integer number (3227524300).

Almost surely, 2^42021544484 is an apocalyptic number.

It is an amenable number.

42021544484 is a deficient number, since it is larger than the sum of its proper divisors (35439038716).

42021544484 is a wasteful number, since it uses less digits than its factorization.

42021544484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374843 (or 374841 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 38.

The spelling of 42021544484 in words is "forty-two billion, twenty-one million, five hundred forty-four thousand, four hundred eighty-four".