30021141 has 16 divisors (see below), whose sum is σ = 41932800. Its totient is φ = 19068720.

The previous prime is 30021137. The next prime is 30021151. The reversal of 30021141 is 14112003.

It is a happy number.

It is not a de Polignac number, because 30021141 - 2² = 30021137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20760 + ... + 22158.

It is an arithmetic number, because the mean of its divisors is an integer number (2620800).

Almost surely, 2^30021141 is an apocalyptic number.

It is an amenable number.

30021141 is a deficient number, since it is larger than the sum of its proper divisors (11911659).

30021141 is a wasteful number, since it uses less digits than its factorization.

30021141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 30021141 is about 5479.1551356026. The cubic root of 30021141 is about 310.7962223486.

Adding to 30021141 its reverse (14112003), we get a palindrome (44133144).

The spelling of 30021141 in words is "thirty million, twenty-one thousand, one hundred forty-one".