30513242 has 8 divisors (see below), whose sum is σ = 46190100. Its totient is φ = 15116544.

The previous prime is 30513239. The next prime is 30513247. The reversal of 30513242 is 24231503.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29278921 + 1234321 = 5411^2 + 1111^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30513247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69767 + ... + 70202.

Almost surely, 2^30513242 is an apocalyptic number.

30513242 is a deficient number, since it is larger than the sum of its proper divisors (15676858).

30513242 is a wasteful number, since it uses less digits than its factorization.

30513242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140080.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30513242 is about 5523.8792528440. The cubic root of 30513242 is about 312.4851986590.

Adding to 30513242 its reverse (24231503), we get a palindrome (54744745).

The spelling of 30513242 in words is "thirty million, five hundred thirteen thousand, two hundred forty-two".