30143442021 has 32 divisors (see below), whose sum is σ = 50604742656. Its totient is φ = 15503880000.

The previous prime is 30143442019. The next prime is 30143442029. The reversal of 30143442021 is 12024434103.

It is not a de Polignac number, because 30143442021 - 2¹ = 30143442019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30143441982 and 30143442000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30143442029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 622665 + ... + 669326.

It is an arithmetic number, because the mean of its divisors is an integer number (1581398208).

Almost surely, 2^30143442021 is an apocalyptic number.

It is an amenable number.

30143442021 is a deficient number, since it is larger than the sum of its proper divisors (20461300635).

30143442021 is a wasteful number, since it uses less digits than its factorization.

30143442021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292113.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 30143442021 its reverse (12024434103), we get a palindrome (42167876124).

The spelling of 30143442021 in words is "thirty billion, one hundred forty-three million, four hundred forty-two thousand, twenty-one".