2143279 has 2 divisors, whose sum is σ = 2143280. Its totient is φ = 2143278.

The previous prime is 2143261. The next prime is 2143313. The reversal of 2143279 is 9723412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2143279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071639 + 1071640.

It is an arithmetic number, because the mean of its divisors is an integer number (1071640).

2^2143279 is an apocalyptic number.

2143279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143279 is an equidigital number, since it uses as much as digits as its factorization.

2143279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

The square root of 2143279 is about 1463.9941939776. The cubic root of 2143279 is about 128.9316586106.

The spelling of 2143279 in words is "two million, one hundred forty-three thousand, two hundred seventy-nine".