2942749 has 2 divisors, whose sum is σ = 2942750. Its totient is φ = 2942748.

The previous prime is 2942741. The next prime is 2942759. The reversal of 2942749 is 9472492.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2913849 + 28900 = 1707^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 2942749 - 2³ = 2942741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2942741) 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 as a sum of consecutive naturals, namely, 1471374 + 1471375.

It is an arithmetic number, because the mean of its divisors is an integer number (1471375).

2^2942749 is an apocalyptic number.

It is an amenable number.

2942749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2942749 is an equidigital number, since it uses as much as digits as its factorization.

2942749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 2942749 is about 1715.4442573281. Note that the first 3 decimals coincide. The cubic root of 2942749 is about 143.3016112721.

It can be divided in two parts, 29 and 42749, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 2942749 in words is "two million, nine hundred forty-two thousand, seven hundred forty-nine".