30000423 has 4 divisors (see below), whose sum is σ = 40000568. Its totient is φ = 20000280.

The previous prime is 30000419. The next prime is 30000431. The reversal of 30000423 is 32400003.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30000423 - 2² = 30000419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30000399 and 30000408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5000068 + ... + 5000073.

It is an arithmetic number, because the mean of its divisors is an integer number (10000142).

Almost surely, 2^30000423 is an apocalyptic number.

30000423 is a deficient number, since it is larger than the sum of its proper divisors (10000145).

30000423 is a wasteful number, since it uses less digits than its factorization.

30000423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000144.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 30000423 is about 5477.2641893559. The cubic root of 30000423 is about 310.7247109878.

Adding to 30000423 its reverse (32400003), we get a palindrome (62400426).

The spelling of 30000423 in words is "thirty million, four hundred twenty-three", and thus it is an aban number.