30121192 has 8 divisors (see below), whose sum is σ = 56477250. Its totient is φ = 15060592.

The previous prime is 30121163. The next prime is 30121207. The reversal of 30121192 is 29112103.

It can be written as a sum of positive squares in only one way, i.e., 29877156 + 244036 = 5466^2 + 494^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1882567 + ... + 1882582.

Almost surely, 2^30121192 is an apocalyptic number.

It is an amenable number.

30121192 is a deficient number, since it is larger than the sum of its proper divisors (26356058).

30121192 is a wasteful number, since it uses less digits than its factorization.

30121192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3765155 (or 3765151 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 30121192 is about 5488.2776897675. The cubic root of 30121192 is about 311.1411014551.

Adding to 30121192 its reverse (29112103), we get a palindrome (59233295).

The spelling of 30121192 in words is "thirty million, one hundred twenty-one thousand, one hundred ninety-two".