305005124240 has 40 divisors (see below), whose sum is σ = 710209861368. Its totient is φ = 121817456640.

The previous prime is 305005124219. The next prime is 305005124261. The reversal of 305005124240 is 42421500503.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (305005124219) and next prime (305005124261).

It can be written as a sum of positive squares in 4 ways, for example, as 14833291264 + 290171832976 = 121792^2 + 538676^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2831057 + ... + 2936816.

Almost surely, 2^305005124240 is an apocalyptic number.

It is an amenable number.

305005124240 is an abundant number, since it is smaller than the sum of its proper divisors (405204737128).

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

305005124240 is a wasteful number, since it uses less digits than its factorization.

305005124240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5768547 (or 5768541 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 305005124240 its reverse (42421500503), we get a palindrome (347426624743).

The spelling of 305005124240 in words is "three hundred five billion, five million, one hundred twenty-four thousand, two hundred forty".