2421240020 has 24 divisors (see below), whose sum is σ = 5088888168. Its totient is φ = 967680000.

The previous prime is 2421239987. The next prime is 2421240023. The reversal of 2421240020 is 200421242.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 441168016 + 1980072004 = 21004^2 + 44498^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421240023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26381 + ... + 74420.

It is an arithmetic number, because the mean of its divisors is an integer number (212037007).

Almost surely, 2^2421240020 is an apocalyptic number.

2421240020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2421240020 is an abundant number, since it is smaller than the sum of its proper divisors (2667648148).

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

2421240020 is a wasteful number, since it uses less digits than its factorization.

2421240020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102011 (or 102009 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2421240020 is about 49206.0973864012. The cubic root of 2421240020 is about 1342.8039637373.

Adding to 2421240020 its reverse (200421242), we get a palindrome (2621661262).

The spelling of 2421240020 in words is "two billion, four hundred twenty-one million, two hundred forty thousand, twenty".