2542443 has 8 divisors (see below), whose sum is σ = 3537408. Its totient is φ = 1621224.

The previous prime is 2542429. The next prime is 2542453. The reversal of 2542443 is 3442452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2542443 - 2⁸ = 2542187 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2542453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18355 + ... + 18492.

It is an arithmetic number, because the mean of its divisors is an integer number (442176).

2^2542443 is an apocalyptic number.

2542443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2542443 is a deficient number, since it is larger than the sum of its proper divisors (994965).

2542443 is a wasteful number, since it uses less digits than its factorization.

2542443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36873.

The product of its digits is 3840, while the sum is 24.

The square root of 2542443 is about 1594.5039981135. The cubic root of 2542443 is about 136.4846284130.

Adding to 2542443 its reverse (3442452), we get a palindrome (5984895).

Subtracting 2542443 from its reverse (3442452), we obtain a palindrome (900009).

The spelling of 2542443 in words is "two million, five hundred forty-two thousand, four hundred forty-three".