30251242 has 16 divisors (see below), whose sum is σ = 52710912. Its totient is φ = 12751920.

The previous prime is 30251239. The next prime is 30251251. The reversal of 30251242 is 24215203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16858 + ... + 18565.

It is an arithmetic number, because the mean of its divisors is an integer number (3294432).

Almost surely, 2^30251242 is an apocalyptic number.

30251242 is a deficient number, since it is larger than the sum of its proper divisors (22459670).

30251242 is a wasteful number, since it uses less digits than its factorization.

30251242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35493.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 30251242 is about 5500.1129079320. The cubic root of 30251242 is about 311.5882484831.

Adding to 30251242 its reverse (24215203), we get a palindrome (54466445).

The spelling of 30251242 in words is "thirty million, two hundred fifty-one thousand, two hundred forty-two".