2540424 has 32 divisors (see below), whose sum is σ = 6402240. Its totient is φ = 840000.

The previous prime is 2540423. The next prime is 2540431. The reversal of 2540424 is 4240452.

It is a self number, because there is not a number n which added to its sum of digits gives 2540424.

It is not an unprimeable number, because it can be changed into a prime (2540423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3274 + ... + 3974.

It is an arithmetic number, because the mean of its divisors is an integer number (200070).

2^2540424 is an apocalyptic number.

2540424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2540424 is an abundant number, since it is smaller than the sum of its proper divisors (3861816).

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

2540424 is a wasteful number, since it uses less digits than its factorization.

2540424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 2540424 is about 1593.8707601308. The cubic root of 2540424 is about 136.4484905409.

Adding to 2540424 its reverse (4240452), we get a palindrome (6780876).

The spelling of 2540424 in words is "two million, five hundred forty thousand, four hundred twenty-four".