2442491 has 4 divisors (see below), whose sum is σ = 2448984. Its totient is φ = 2436000.

The previous prime is 2442487. The next prime is 2442497. The reversal of 2442491 is 1942442.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2442491 - 2² = 2442487 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2442491.

It is not an unprimeable number, because it can be changed into a prime (2442497) 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, 2645 + ... + 3446.

It is an arithmetic number, because the mean of its divisors is an integer number (612246).

2^2442491 is an apocalyptic number.

2442491 is a deficient number, since it is larger than the sum of its proper divisors (6493).

2442491 is an equidigital number, since it uses as much as digits as its factorization.

2442491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6492.

The product of its digits is 2304, while the sum is 26.

The square root of 2442491 is about 1562.8470814510. The cubic root of 2442491 is about 134.6721077707.

The spelling of 2442491 in words is "two million, four hundred forty-two thousand, four hundred ninety-one".