2543424540 has 48 divisors (see below), whose sum is σ = 7124343072. Its totient is φ = 677984256.

The previous prime is 2543424539. The next prime is 2543424547. The reversal of 2543424540 is 454243452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543424547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186432 + ... + 199608.

It is an arithmetic number, because the mean of its divisors is an integer number (148423814).

Almost surely, 2^2543424540 is an apocalyptic number.

2543424540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2543424540 is an abundant number, since it is smaller than the sum of its proper divisors (4580918532).

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

2543424540 is a wasteful number, since it uses less digits than its factorization.

2543424540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16406 (or 16404 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 33.

The square root of 2543424540 is about 50432.3759107183. The cubic root of 2543424540 is about 1365.0218998486.

Adding to 2543424540 its reverse (454243452), we get a palindrome (2997667992).

The spelling of 2543424540 in words is "two billion, five hundred forty-three million, four hundred twenty-four thousand, five hundred forty".