2543204420 has 24 divisors (see below), whose sum is σ = 5654890584. Its totient is φ = 957441536.

The previous prime is 2543204413. The next prime is 2543204449. The reversal of 2543204420 is 244023452.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 812478016 + 1730726404 = 28504^2 + 41602^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2543204420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3739667 + ... + 3740346.

It is an arithmetic number, because the mean of its divisors is an integer number (235620441).

Almost surely, 2^2543204420 is an apocalyptic number.

2543204420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2543204420 is an abundant number, since it is smaller than the sum of its proper divisors (3111686164).

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

2543204420 is a wasteful number, since it uses less digits than its factorization.

2543204420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7480039 (or 7480037 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 2543204420 is about 50430.1935352225. The cubic root of 2543204420 is about 1364.9825202268.

Adding to 2543204420 its reverse (244023452), we get a palindrome (2787227872).

The spelling of 2543204420 in words is "two billion, five hundred forty-three million, two hundred four thousand, four hundred twenty".