2442749 has 4 divisors (see below), whose sum is σ = 2446080. Its totient is φ = 2439420.

The previous prime is 2442719. The next prime is 2442767. The reversal of 2442749 is 9472442.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2442749 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 (2442719) 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 3 ways as a sum of consecutive naturals, for example, 29 + ... + 2210.

It is an arithmetic number, because the mean of its divisors is an integer number (611520).

2^2442749 is an apocalyptic number.

It is an amenable number.

2442749 is a deficient number, since it is larger than the sum of its proper divisors (3331).

2442749 is a wasteful number, since it uses less digits than its factorization.

2442749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3330.

The product of its digits is 16128, while the sum is 32.

The square root of 2442749 is about 1562.9296209363. The cubic root of 2442749 is about 134.6768494027.

The spelling of 2442749 in words is "two million, four hundred forty-two thousand, seven hundred forty-nine".