2742743 has 4 divisors (see below), whose sum is σ = 2787768. Its totient is φ = 2697720.

The previous prime is 2742739. The next prime is 2742749. The reversal of 2742743 is 3472472.

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 2742743 - 2² = 2742739 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2742749) 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, 22421 + ... + 22542.

It is an arithmetic number, because the mean of its divisors is an integer number (696942).

2^2742743 is an apocalyptic number.

2742743 is a deficient number, since it is larger than the sum of its proper divisors (45025).

2742743 is an equidigital number, since it uses as much as digits as its factorization.

2742743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45024.

The product of its digits is 9408, while the sum is 29.

The square root of 2742743 is about 1656.1228819143. The cubic root of 2742743 is about 139.9786191839.

The spelling of 2742743 in words is "two million, seven hundred forty-two thousand, seven hundred forty-three".