2542440 has 32 divisors (see below), whose sum is σ = 7627680. Its totient is φ = 677952.

The previous prime is 2542429. The next prime is 2542453. The reversal of 2542440 is 442452.

2542440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10474 + ... + 10713.

It is an arithmetic number, because the mean of its divisors is an integer number (238365).

2^2542440 is an apocalyptic number.

2542440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2542440 is an abundant number, since it is smaller than the sum of its proper divisors (5085240).

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

2542440 is a wasteful number, since it uses less digits than its factorization.

2542440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21201 (or 21197 counting only the distinct ones).

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

The square root of 2542440 is about 1594.5030573818. The cubic root of 2542440 is about 136.4845747305.

Adding to 2542440 its reverse (442452), we get a palindrome (2984892).

The spelling of 2542440 in words is "two million, five hundred forty-two thousand, four hundred forty".