2421202420 has 96 divisors (see below), whose sum is σ = 6316869888. Its totient is φ = 759048192.

The previous prime is 2421202367. The next prime is 2421202439. The reversal of 2421202420 is 242021242.

It is a super-2 number, since 2×2421202420² = 11724442317227712800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188524 + ... + 200956.

It is an arithmetic number, because the mean of its divisors is an integer number (65800728).

Almost surely, 2^2421202420 is an apocalyptic number.

2421202420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2421202420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3158434944).

2421202420 is an abundant number, since it is smaller than the sum of its proper divisors (3895667468).

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

2421202420 is a wasteful number, since it uses less digits than its factorization.

2421202420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12569 (or 12567 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2421202420 is about 49205.7153184465. The cubic root of 2421202420 is about 1342.7970127961.

Adding to 2421202420 its reverse (242021242), we get a palindrome (2663223662).

The spelling of 2421202420 in words is "two billion, four hundred twenty-one million, two hundred two thousand, four hundred twenty".