2542321 has 4 divisors (see below), whose sum is σ = 2546032. Its totient is φ = 2538612.

The previous prime is 2542237. The next prime is 2542327. The reversal of 2542321 is 1232452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2542321 - 2⁷ = 2542193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2542327) 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, 495 + ... + 2308.

It is an arithmetic number, because the mean of its divisors is an integer number (636508).

2^2542321 is an apocalyptic number.

It is an amenable number.

2542321 is a deficient number, since it is larger than the sum of its proper divisors (3711).

2542321 is an equidigital number, since it uses as much as digits as its factorization.

2542321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710.

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

The square root of 2542321 is about 1594.4657412438. The cubic root of 2542321 is about 136.4824452908.

Adding to 2542321 its reverse (1232452), we get a palindrome (3774773).

The spelling of 2542321 in words is "two million, five hundred forty-two thousand, three hundred twenty-one".