2742749 has 2 divisors, whose sum is σ = 2742750. Its totient is φ = 2742748.

The previous prime is 2742739. The next prime is 2742757. The reversal of 2742749 is 9472472.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2656900 + 85849 = 1630^2 + 293^2 .

It is a cyclic number.

It is not a de Polignac number, because 2742749 - 2¹² = 2738653 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2742739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1371374 + 1371375.

It is an arithmetic number, because the mean of its divisors is an integer number (1371375).

2^2742749 is an apocalyptic number.

It is an amenable number.

2742749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2742749 is an equidigital number, since it uses as much as digits as its factorization.

2742749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 35.

The square root of 2742749 is about 1656.1246933731. The cubic root of 2742749 is about 139.9787212558.

The spelling of 2742749 in words is "two million, seven hundred forty-two thousand, seven hundred forty-nine".