30021243 has 8 divisors (see below), whose sum is σ = 45746688. Its totient is φ = 17154984.

The previous prime is 30021241. The next prime is 30021247. The reversal of 30021243 is 34212003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30021243 - 2¹ = 30021241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30021241) 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, 714771 + ... + 714812.

It is an arithmetic number, because the mean of its divisors is an integer number (5718336).

Almost surely, 2^30021243 is an apocalyptic number.

30021243 is a deficient number, since it is larger than the sum of its proper divisors (15725445).

30021243 is a wasteful number, since it uses less digits than its factorization.

30021243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429593.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30021243 is about 5479.1644435990. The cubic root of 30021243 is about 310.7965743358.

Adding to 30021243 its reverse (34212003), we get a palindrome (64233246).

The spelling of 30021243 in words is "thirty million, twenty-one thousand, two hundred forty-three".