2442421 has 4 divisors (see below), whose sum is σ = 2448000. Its totient is φ = 2436844.

The previous prime is 2442413. The next prime is 2442437. The reversal of 2442421 is 1242442.

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 2442421 - 2³ = 2442413 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440421) 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, 2071 + ... + 3028.

It is an arithmetic number, because the mean of its divisors is an integer number (612000).

2^2442421 is an apocalyptic number.

It is an amenable number.

2442421 is a deficient number, since it is larger than the sum of its proper divisors (5579).

2442421 is an equidigital number, since it uses as much as digits as its factorization.

2442421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5578.

The product of its digits is 512, while the sum is 19.

The square root of 2442421 is about 1562.8246862652. The cubic root of 2442421 is about 134.6708212238.

Adding to 2442421 its reverse (1242442), we get a palindrome (3684863).

The spelling of 2442421 in words is "two million, four hundred forty-two thousand, four hundred twenty-one".