42420000321 has 8 divisors (see below), whose sum is σ = 62844444960. Its totient is φ = 28280000196.

The previous prime is 42420000283. The next prime is 42420000341. The reversal of 42420000321 is 12300002424.

It is not a de Polignac number, because 42420000321 - 2⁶ = 42420000257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42420000294 and 42420000303.

It is not an unprimeable number, because it can be changed into a prime (42420000341) 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, 785555535 + ... + 785555588.

It is an arithmetic number, because the mean of its divisors is an integer number (7855555620).

Almost surely, 2^42420000321 is an apocalyptic number.

It is an amenable number.

42420000321 is a deficient number, since it is larger than the sum of its proper divisors (20424444639).

42420000321 is a wasteful number, since it uses less digits than its factorization.

42420000321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571111132 (or 1571111126 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 42420000321 its reverse (12300002424), we get a palindrome (54720002745).

The spelling of 42420000321 in words is "forty-two billion, four hundred twenty million, three hundred twenty-one", and thus it is an aban number.