30040242 has 32 divisors (see below), whose sum is σ = 61461504. Its totient is φ = 9786000.

The previous prime is 30040237. The next prime is 30040253. The reversal of 30040242 is 24204003.

It is a happy number.

It is a super-2 number, since 2×30040242² = 1804832278837128, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64093 + ... + 64559.

It is an arithmetic number, because the mean of its divisors is an integer number (1920672).

Almost surely, 2^30040242 is an apocalyptic number.

30040242 is an abundant number, since it is smaller than the sum of its proper divisors (31421262).

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

30040242 is a wasteful number, since it uses less digits than its factorization.

30040242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 30040242 is about 5480.8979191370. The cubic root of 30040242 is about 310.8621232421.

Adding to 30040242 its reverse (24204003), we get a palindrome (54244245).

The spelling of 30040242 in words is "thirty million, forty thousand, two hundred forty-two".