2442643 has 4 divisors (see below), whose sum is σ = 2791600. Its totient is φ = 2093688.

The previous prime is 2442631. The next prime is 2442667. The reversal of 2442643 is 3462442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3462442 = 2 ⋅1731221.

It is a cyclic number.

It is not a de Polignac number, because 2442643 - 2¹⁷ = 2311571 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 4⁷ + 4⁸ + 2²¹ + 6⁴ + 4⁹ + 3 .

It is not an unprimeable number, because it can be changed into a prime (2442673) 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, 174468 + ... + 174481.

It is an arithmetic number, because the mean of its divisors is an integer number (697900).

2^2442643 is an apocalyptic number.

2442643 is a deficient number, since it is larger than the sum of its proper divisors (348957).

2442643 is an equidigital number, since it uses as much as digits as its factorization.

2442643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348956.

The product of its digits is 4608, while the sum is 25.

The square root of 2442643 is about 1562.8957098924. The cubic root of 2442643 is about 134.6749013307.

The spelling of 2442643 in words is "two million, four hundred forty-two thousand, six hundred forty-three".