2138743 has 2 divisors, whose sum is σ = 2138744. Its totient is φ = 2138742.

The previous prime is 2138737. The next prime is 2138749. The reversal of 2138743 is 3478312.

It is a balanced prime because it is at equal distance from previous prime (2138737) and next prime (2138749).

It is a cyclic number.

It is not a de Polignac number, because 2138743 - 2⁹ = 2138231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2138749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069371 + 1069372.

It is an arithmetic number, because the mean of its divisors is an integer number (1069372).

2^2138743 is an apocalyptic number.

2138743 is a deficient number, since it is larger than the sum of its proper divisors (1).

2138743 is an equidigital number, since it uses as much as digits as its factorization.

2138743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 2138743 is about 1462.4441869692. Note that the first 3 decimals coincide. The cubic root of 2138743 is about 128.8406380969.

The spelling of 2138743 in words is "two million, one hundred thirty-eight thousand, seven hundred forty-three".