30306142 has 32 divisors (see below), whose sum is σ = 48612960. Its totient is φ = 14152320.

The previous prime is 30306047. The next prime is 30306149. The reversal of 30306142 is 24160303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30306149) 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 15 ways as a sum of consecutive naturals, for example, 277984 + ... + 278092.

It is an arithmetic number, because the mean of its divisors is an integer number (1519155).

Almost surely, 2^30306142 is an apocalyptic number.

30306142 is a deficient number, since it is larger than the sum of its proper divisors (18306818).

30306142 is a wasteful number, since it uses less digits than its factorization.

30306142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 30306142 is about 5505.1014522895. The cubic root of 30306142 is about 311.7766248495.

Adding to 30306142 its reverse (24160303), we get a palindrome (54466445).

The spelling of 30306142 in words is "thirty million, three hundred six thousand, one hundred forty-two".