305212242 has 32 divisors (see below), whose sum is σ = 617932800. Its totient is φ = 100493568.

The previous prime is 305212199. The next prime is 305212249. The reversal of 305212242 is 242212503.

It is not an unprimeable number, because it can be changed into a prime (305212249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204234 + ... + 205722.

It is an arithmetic number, because the mean of its divisors is an integer number (19310400).

Almost surely, 2^305212242 is an apocalyptic number.

305212242 is an abundant number, since it is smaller than the sum of its proper divisors (312720558).

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

305212242 is a wasteful number, since it uses less digits than its factorization.

305212242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 305212242 is about 17470.3246106076. The cubic root of 305212242 is about 673.2876520872.

Adding to 305212242 its reverse (242212503), we get a palindrome (547424745).

The spelling of 305212242 in words is "three hundred five million, two hundred twelve thousand, two hundred forty-two".