30423021 has 8 divisors (see below), whose sum is σ = 40589664. Its totient is φ = 20269200.

The previous prime is 30423017. The next prime is 30423031. The reversal of 30423021 is 12032403.

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

It is not a de Polignac number, because 30423021 - 2² = 30423017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30423031) 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, 6775 + ... + 10331.

It is an arithmetic number, because the mean of its divisors is an integer number (5073708).

Almost surely, 2^30423021 is an apocalyptic number.

It is an amenable number.

30423021 is a deficient number, since it is larger than the sum of its proper divisors (10166643).

30423021 is a wasteful number, since it uses less digits than its factorization.

30423021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6411.

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

The square root of 30423021 is about 5515.7067543516. The cubic root of 30423021 is about 312.1769110918.

Adding to 30423021 its reverse (12032403), we get a palindrome (42455424).

The spelling of 30423021 in words is "thirty million, four hundred twenty-three thousand, twenty-one".