2145223043 has 2 divisors, whose sum is σ = 2145223044. Its totient is φ = 2145223042.

The previous prime is 2145222977. The next prime is 2145223097. The reversal of 2145223043 is 3403225412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2145223043 - 2²⁰ = 2144174467 is a prime.

It is not a weakly prime, because it can be changed into another prime (2145223243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072611521 + 1072611522.

It is an arithmetic number, because the mean of its divisors is an integer number (1072611522).

Almost surely, 2^2145223043 is an apocalyptic number.

2145223043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145223043 is an equidigital number, since it uses as much as digits as its factorization.

2145223043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 2145223043 is about 46316.5525811237. The cubic root of 2145223043 is about 1289.7062895212.

Adding to 2145223043 its reverse (3403225412), we get a palindrome (5548448455).

The spelling of 2145223043 in words is "two billion, one hundred forty-five million, two hundred twenty-three thousand, forty-three".