305407242 has 48 divisors (see below), whose sum is σ = 773847360. Its totient is φ = 85228416.

The previous prime is 305407241. The next prime is 305407283. The reversal of 305407242 is 242704503.

It is not an unprimeable number, because it can be changed into a prime (305407241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22767 + ... + 33602.

It is an arithmetic number, because the mean of its divisors is an integer number (16121820).

Almost surely, 2^305407242 is an apocalyptic number.

305407242 is an abundant number, since it is smaller than the sum of its proper divisors (468440118).

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

305407242 is a wasteful number, since it uses less digits than its factorization.

305407242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56427 (or 56424 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 305407242 is about 17475.9046117790. The cubic root of 305407242 is about 673.4310093136.

The spelling of 305407242 in words is "three hundred five million, four hundred seven thousand, two hundred forty-two".