30121142 has 16 divisors (see below), whose sum is σ = 46729872. Its totient is φ = 14551680.

The previous prime is 30121097. The next prime is 30121151. The reversal of 30121142 is 24112103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7058 + ... + 10490.

It is an arithmetic number, because the mean of its divisors is an integer number (2920617).

Almost surely, 2^30121142 is an apocalyptic number.

30121142 is a deficient number, since it is larger than the sum of its proper divisors (16608730).

30121142 is a wasteful number, since it uses less digits than its factorization.

30121142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3583.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 30121142 is about 5488.2731346025. The cubic root of 30121142 is about 311.1409292943.

Adding to 30121142 its reverse (24112103), we get a palindrome (54233245).

The spelling of 30121142 in words is "thirty million, one hundred twenty-one thousand, one hundred forty-two".