42020312421 has 8 divisors (see below), whose sum is σ = 56028267360. Its totient is φ = 28012949552.

The previous prime is 42020312387. The next prime is 42020312459. The reversal of 42020312421 is 12421302024.

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 42020312421 - 2¹⁴ = 42020296037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020312491) 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 7 ways as a sum of consecutive naturals, for example, 58915 + ... + 295823.

It is an arithmetic number, because the mean of its divisors is an integer number (7003533420).

Almost surely, 2^42020312421 is an apocalyptic number.

It is an amenable number.

42020312421 is a deficient number, since it is larger than the sum of its proper divisors (14007954939).

42020312421 is a wasteful number, since it uses less digits than its factorization.

42020312421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296035.

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

Adding to 42020312421 its reverse (12421302024), we get a palindrome (54441614445).

The spelling of 42020312421 in words is "forty-two billion, twenty million, three hundred twelve thousand, four hundred twenty-one".