30342021 has 4 divisors (see below), whose sum is σ = 40456032. Its totient is φ = 20228012.

The previous prime is 30342017. The next prime is 30342041. The reversal of 30342021 is 12024303.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30342021 - 2² = 30342017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30342001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5057001 + ... + 5057006.

It is an arithmetic number, because the mean of its divisors is an integer number (10114008).

Almost surely, 2^30342021 is an apocalyptic number.

It is an amenable number.

30342021 is a deficient number, since it is larger than the sum of its proper divisors (10114011).

30342021 is a wasteful number, since it uses less digits than its factorization.

30342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10114010.

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

The square root of 30342021 is about 5508.3591930810. The cubic root of 30342021 is about 311.8996122627.

Adding to 30342021 its reverse (12024303), we get a palindrome (42366324).

It can be divided in two parts, 303 and 42021, that added together give a palindrome (42324).

The spelling of 30342021 in words is "thirty million, three hundred forty-two thousand, twenty-one".