30012143 has 8 divisors (see below), whose sum is σ = 35226912. Its totient is φ = 25029216.

The previous prime is 30012139. The next prime is 30012149. The reversal of 30012143 is 34121003.

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

It is a cyclic number.

It is not a de Polignac number, because 30012143 - 2² = 30012139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30012149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57680 + ... + 58197.

It is an arithmetic number, because the mean of its divisors is an integer number (4403364).

Almost surely, 2^30012143 is an apocalyptic number.

30012143 is a deficient number, since it is larger than the sum of its proper divisors (5214769).

30012143 is a wasteful number, since it uses less digits than its factorization.

30012143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115921.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30012143 is about 5478.3339620728. Note that the first 3 decimals coincide. The cubic root of 30012143 is about 310.7651684117.

Adding to 30012143 its reverse (34121003), we get a palindrome (64133146).

The spelling of 30012143 in words is "thirty million, twelve thousand, one hundred forty-three".