2421200520 has 96 divisors (see below), whose sum is σ = 8331799320. Its totient is φ = 607672320.

The previous prime is 2421200497. The next prime is 2421200531. The reversal of 2421200520 is 250021242.

2421200520 is a `hidden beast` number, since 24 + 2 + 120 + 0 + 520 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1970827236 + 450373284 = 44394^2 + 21222^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2421200493 and 2421200502.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191691 + ... + 203930.

Almost surely, 2^2421200520 is an apocalyptic number.

2421200520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2421200520 is an abundant number, since it is smaller than the sum of its proper divisors (5910598800).

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

2421200520 is a wasteful number, since it uses less digits than its factorization.

2421200520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395655 (or 395648 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2421200520 is about 49205.6960117424. The cubic root of 2421200520 is about 1342.7966615499.

Adding to 2421200520 its reverse (250021242), we get a palindrome (2671221762).

The spelling of 2421200520 in words is "two billion, four hundred twenty-one million, two hundred thousand, five hundred twenty".