30123242 has 8 divisors (see below), whose sum is σ = 45328356. Its totient is φ = 15013792.

The previous prime is 30123229. The next prime is 30123251. The reversal of 30123242 is 24232103.

It can be written as a sum of positive squares in 2 ways, for example, as 25110121 + 5013121 = 5011^2 + 2239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 30123242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23123 + ... + 24390.

Almost surely, 2^30123242 is an apocalyptic number.

30123242 is a deficient number, since it is larger than the sum of its proper divisors (15205114).

30123242 is a wasteful number, since it uses less digits than its factorization.

30123242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47832.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30123242 is about 5488.4644482769. The cubic root of 30123242 is about 311.1481598830.

Adding to 30123242 its reverse (24232103), we get a palindrome (54355345).

The spelling of 30123242 in words is "thirty million, one hundred twenty-three thousand, two hundred forty-two".