42304344021 has 12 divisors (see below), whose sum is σ = 61242374700. Its totient is φ = 28140080640.

The previous prime is 42304343993. The next prime is 42304344067. The reversal of 42304344021 is 12044340324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32414041521 + 9890302500 = 180039^2 + 99450^2 .

It is not a de Polignac number, because 42304344021 - 2¹¹ = 42304341973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42304340021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5230350 + ... + 5238431.

It is an arithmetic number, because the mean of its divisors is an integer number (5103531225).

Almost surely, 2^42304344021 is an apocalyptic number.

It is an amenable number.

42304344021 is a deficient number, since it is larger than the sum of its proper divisors (18938030679).

42304344021 is a wasteful number, since it uses less digits than its factorization.

42304344021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10469236 (or 10469233 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 42304344021 its reverse (12044340324), we get a palindrome (54348684345).

The spelling of 42304344021 in words is "forty-two billion, three hundred four million, three hundred forty-four thousand, twenty-one".