2240743 has 4 divisors (see below), whose sum is σ = 2318040. Its totient is φ = 2163448.

The previous prime is 2240741. The next prime is 2240747. The reversal of 2240743 is 3470422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3470422 = 2 ⋅1735211.

It is a cyclic number.

It is not a de Polignac number, because 2240743 - 2¹ = 2240741 is a prime.

It is a Duffinian number.

2240743 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2240741) 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, 38605 + ... + 38662.

It is an arithmetic number, because the mean of its divisors is an integer number (579510).

2^2240743 is an apocalyptic number.

2240743 is a deficient number, since it is larger than the sum of its proper divisors (77297).

2240743 is an equidigital number, since it uses as much as digits as its factorization.

2240743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77296.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 2240743 is about 1496.9111530081. The cubic root of 2240743 is about 130.8571174885.

The spelling of 2240743 in words is "two million, two hundred forty thousand, seven hundred forty-three".