2043402173 has 2 divisors, whose sum is σ = 2043402174. Its totient is φ = 2043402172.

The previous prime is 2043402103. The next prime is 2043402197. The reversal of 2043402173 is 3712043402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1614994969 + 428407204 = 40187^2 + 20698^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2043402173 is a prime.

It is a super-2 number, since 2×2043402173² = 8350984881242243858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2043402103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021701086 + 1021701087.

It is an arithmetic number, because the mean of its divisors is an integer number (1021701087).

Almost surely, 2^2043402173 is an apocalyptic number.

It is an amenable number.

2043402173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043402173 is an equidigital number, since it uses as much as digits as its factorization.

2043402173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 2043402173 is about 45204.0061609588. The cubic root of 2043402173 is about 1268.9697915614.

Adding to 2043402173 its reverse (3712043402), we get a palindrome (5755445575).

The spelling of 2043402173 in words is "two billion, forty-three million, four hundred two thousand, one hundred seventy-three".