30121234 has 16 divisors (see below), whose sum is σ = 53081280. Its totient is φ = 12638160.

The previous prime is 30121207. The next prime is 30121241. The reversal of 30121234 is 43212103.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 52374 + ... + 52945.

It is an arithmetic number, because the mean of its divisors is an integer number (3317580).

Almost surely, 2^30121234 is an apocalyptic number.

30121234 is a deficient number, since it is larger than the sum of its proper divisors (22960046).

30121234 is a wasteful number, since it uses less digits than its factorization.

30121234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105345.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 30121234 is about 5488.2815161032. The cubic root of 30121234 is about 311.1412460700.

Adding to 30121234 its reverse (43212103), we get a palindrome (73333337).

The spelling of 30121234 in words is "thirty million, one hundred twenty-one thousand, two hundred thirty-four".