2139743 has 2 divisors, whose sum is σ = 2139744. Its totient is φ = 2139742.

The previous prime is 2139737. The next prime is 2139757. The reversal of 2139743 is 3479312.

2139743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2139743 - 2¹⁶ = 2074207 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 1 + 3⁹ + 9² + 7³ + 4⁵ + 3¹³ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2139733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069871 + 1069872.

It is an arithmetic number, because the mean of its divisors is an integer number (1069872).

2^2139743 is an apocalyptic number.

2139743 is a deficient number, since it is larger than the sum of its proper divisors (1).

2139743 is an equidigital number, since it uses as much as digits as its factorization.

2139743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 29.

The square root of 2139743 is about 1462.7860404037. The cubic root of 2139743 is about 128.8607153982.

It can be divided in two parts, 2139 and 743, that added together give a palindrome (2882).

The spelling of 2139743 in words is "two million, one hundred thirty-nine thousand, seven hundred forty-three".