303220242 has 24 divisors (see below), whose sum is σ = 707514444. Its totient is φ = 93298464.

The previous prime is 303220187. The next prime is 303220243. The reversal of 303220242 is 242022303.

It can be written as a sum of positive squares in 2 ways, for example, as 299947761 + 3272481 = 17319^2 + 1809^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (303220243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 647673 + ... + 648140.

Almost surely, 2^303220242 is an apocalyptic number.

303220242 is an abundant number, since it is smaller than the sum of its proper divisors (404294202).

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

303220242 is a wasteful number, since it uses less digits than its factorization.

303220242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295834 (or 1295831 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 303220242 is about 17413.2203225021. The cubic root of 303220242 is about 671.8196928031.

Adding to 303220242 its reverse (242022303), we get a palindrome (545242545).

The spelling of 303220242 in words is "three hundred three million, two hundred twenty thousand, two hundred forty-two".