30115242 has 12 divisors (see below), whose sum is σ = 65249730. Its totient is φ = 10038408.

The previous prime is 30115237. The next prime is 30115301. The reversal of 30115242 is 24251103.

It can be written as a sum of positive squares in only one way, i.e., 26842761 + 3272481 = 5181^2 + 1809^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1673069 = 30115242 / (3 + 0 + 1 + 1 + 5 + 2 + 4 + 2).

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 5 ways as a sum of consecutive naturals, for example, 836517 + ... + 836552.

Almost surely, 2^30115242 is an apocalyptic number.

30115242 is an abundant number, since it is smaller than the sum of its proper divisors (35134488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30115242 is a wasteful number, since it uses less digits than its factorization.

30115242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673077 (or 1673074 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 30115242 is about 5487.7355985871. The cubic root of 30115242 is about 311.1206129845.

Adding to 30115242 its reverse (24251103), we get a palindrome (54366345).

The spelling of 30115242 in words is "thirty million, one hundred fifteen thousand, two hundred forty-two".