30123122 has 4 divisors (see below), whose sum is σ = 45184686. Its totient is φ = 15061560.

The previous prime is 30123109. The next prime is 30123139. The reversal of 30123122 is 22132103.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 27133681 + 2989441 = 5209^2 + 1729^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30123097 and 30123106.

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 as a sum of consecutive naturals, namely, 7530779 + ... + 7530782.

Almost surely, 2^30123122 is an apocalyptic number.

30123122 is a deficient number, since it is larger than the sum of its proper divisors (15061564).

30123122 is a wasteful number, since it uses less digits than its factorization.

30123122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15061563.

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

The square root of 30123122 is about 5488.4535162466. The cubic root of 30123122 is about 311.1477467156.

Adding to 30123122 its reverse (22132103), we get a palindrome (52255225).

The spelling of 30123122 in words is "thirty million, one hundred twenty-three thousand, one hundred twenty-two".