42021140221 has 8 divisors (see below), whose sum is σ = 44332636320. Its totient is φ = 39719629872.

The previous prime is 42021140201. The next prime is 42021140237. The reversal of 42021140221 is 12204112024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42021140221 - 2²⁵ = 41987585789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42021140201) 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, 2487790 + ... + 2504623.

It is an arithmetic number, because the mean of its divisors is an integer number (5541579540).

Almost surely, 2^42021140221 is an apocalyptic number.

It is an amenable number.

42021140221 is a deficient number, since it is larger than the sum of its proper divisors (2311496099).

42021140221 is a wasteful number, since it uses less digits than its factorization.

42021140221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4992875.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 42021140221 its reverse (12204112024), we get a palindrome (54225252245).

The spelling of 42021140221 in words is "forty-two billion, twenty-one million, one hundred forty thousand, two hundred twenty-one".