42420130221 has 8 divisors (see below), whose sum is σ = 64640198464. Its totient is φ = 24240074400.

The previous prime is 42420130187. The next prime is 42420130241. The reversal of 42420130221 is 12203102424.

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

It is not a de Polignac number, because 42420130221 - 2⁹ = 42420129709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2020006201 = 42420130221 / (4 + 2 + 4 + 2 + 0 + 1 + 3 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42420130241) 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, 1010003080 + ... + 1010003121.

It is an arithmetic number, because the mean of its divisors is an integer number (8080024808).

Almost surely, 2^42420130221 is an apocalyptic number.

It is an amenable number.

42420130221 is a deficient number, since it is larger than the sum of its proper divisors (22220068243).

42420130221 is a wasteful number, since it uses less digits than its factorization.

42420130221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020006211.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 42420130221 its reverse (12203102424), we get a palindrome (54623232645).

The spelling of 42420130221 in words is "forty-two billion, four hundred twenty million, one hundred thirty thousand, two hundred twenty-one".