30105242 has 4 divisors (see below), whose sum is σ = 45157866. Its totient is φ = 15052620.

The previous prime is 30105209. The next prime is 30105307. The reversal of 30105242 is 24250103.

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., 26306641 + 3798601 = 5129^2 + 1949^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30105242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7526309 + ... + 7526312.

Almost surely, 2^30105242 is an apocalyptic number.

30105242 is a deficient number, since it is larger than the sum of its proper divisors (15052624).

30105242 is a wasteful number, since it uses less digits than its factorization.

30105242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15052623.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 30105242 is about 5486.8244003248. The cubic root of 30105242 is about 311.0861725002.

Adding to 30105242 its reverse (24250103), we get a palindrome (54355345).

The spelling of 30105242 in words is "thirty million, one hundred five thousand, two hundred forty-two".