30442333021 has 8 divisors (see below), whose sum is σ = 30493524600. Its totient is φ = 30391173120.

The previous prime is 30442333013. The next prime is 30442333037. The reversal of 30442333021 is 12033324403.

It can be written as a sum of positive squares in 4 ways, for example, as 11096304921 + 19346028100 = 105339^2 + 139090^2 .

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 30442333021 - 2³ = 30442333013 is a prime.

It is a super-2 number, since 2×30442333021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30442333091) 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, 2600301 + ... + 2611981.

It is an arithmetic number, because the mean of its divisors is an integer number (3811690575).

Almost surely, 2^30442333021 is an apocalyptic number.

It is an amenable number.

30442333021 is a deficient number, since it is larger than the sum of its proper divisors (51191579).

30442333021 is a wasteful number, since it uses less digits than its factorization.

30442333021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15839.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 30442333021 its reverse (12033324403), we get a palindrome (42475657424).

The spelling of 30442333021 in words is "thirty billion, four hundred forty-two million, three hundred thirty-three thousand, twenty-one".