2143073 has 2 divisors, whose sum is σ = 2143074. Its totient is φ = 2143072.

The previous prime is 2143069. The next prime is 2143081. The reversal of 2143073 is 3703412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2140369 + 2704 = 1463^2 + 52^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143073 - 2² = 2143069 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2143093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071536 + 1071537.

It is an arithmetic number, because the mean of its divisors is an integer number (1071537).

2^2143073 is an apocalyptic number.

It is an amenable number.

2143073 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143073 is an equidigital number, since it uses as much as digits as its factorization.

2143073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 2143073 is about 1463.9238368167. The cubic root of 2143073 is about 128.9275277481.

Adding to 2143073 its reverse (3703412), we get a palindrome (5846485).

It can be divided in two parts, 2 and 143073, that multiplied together give a triangular number (286146 = T₇₅₆).

The spelling of 2143073 in words is "two million, one hundred forty-three thousand, seventy-three".