405050500240 has 20 divisors (see below), whose sum is σ = 941742413244. Its totient is φ = 162020200064.

The previous prime is 405050500219. The next prime is 405050500249. The reversal of 405050500240 is 42005050504.

It can be written as a sum of positive squares in 2 ways, for example, as 249284512656 + 155765987584 = 499284^2 + 394672^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (405050500249) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2531565547 + ... + 2531565706.

Almost surely, 2^405050500240 is an apocalyptic number.

405050500240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405050500240 is an abundant number, since it is smaller than the sum of its proper divisors (536691913004).

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

405050500240 is a wasteful number, since it uses less digits than its factorization.

405050500240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063131266 (or 5063131260 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

Adding to 405050500240 its reverse (42005050504), we get a palindrome (447055550744).

The spelling of 405050500240 in words is "four hundred five billion, fifty million, five hundred thousand, two hundred forty".