305004042 has 80 divisors (see below), whose sum is σ = 789098112. Its totient is φ = 86248800.

The previous prime is 305003999. The next prime is 305004047. The reversal of 305004042 is 240400503.

It is a happy number.

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 (305004047) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 113203 + ... + 115865.

Almost surely, 2^305004042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305004042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394549056).

305004042 is an abundant number, since it is smaller than the sum of its proper divisors (484094070).

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

305004042 is a wasteful number, since it uses less digits than its factorization.

305004042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785 (or 2776 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 305004042 is about 17464.3649183129. The cubic root of 305004042 is about 673.1345232628.

Adding to 305004042 its reverse (240400503), we get a palindrome (545404545).

The spelling of 305004042 in words is "three hundred five million, four thousand, forty-two".