2543140 has 12 divisors (see below), whose sum is σ = 5340636. Its totient is φ = 1017248.

The previous prime is 2543129. The next prime is 2543141. The reversal of 2543140 is 413452.

It can be written as a sum of positive squares in 2 ways, for example, as 842724 + 1700416 = 918^2 + 1304^2 .

It is a super-3 number, since 3×2543140³ = 49343739699333432000, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (2543141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63559 + ... + 63598.

It is an arithmetic number, because the mean of its divisors is an integer number (445053).

2^2543140 is an apocalyptic number.

2543140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2543140 is an abundant number, since it is smaller than the sum of its proper divisors (2797496).

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

2543140 is a wasteful number, since it uses less digits than its factorization.

2543140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127166 (or 127164 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2543140 is about 1594.7225464011. The cubic root of 2543140 is about 136.4970995014.

Adding to 2543140 its reverse (413452), we get a palindrome (2956592).

The spelling of 2543140 in words is "two million, five hundred forty-three thousand, one hundred forty".