2145430205 has 8 divisors (see below), whose sum is σ = 2578536504. Its totient is φ = 1713664000.

The previous prime is 2145430193. The next prime is 2145430211. The reversal of 2145430205 is 5020345412.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 507285529 + 1638144676 = 22523^2 + 40474^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2145430205 - 2¹² = 2145426109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331496 + ... + 337905.

It is an arithmetic number, because the mean of its divisors is an integer number (322317063).

Almost surely, 2^2145430205 is an apocalyptic number.

It is an amenable number.

2145430205 is a deficient number, since it is larger than the sum of its proper divisors (433106299).

2145430205 is an equidigital number, since it uses as much as digits as its factorization.

2145430205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670047.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2145430205 is about 46318.7888982430. The cubic root of 2145430205 is about 1289.7478033916.

Adding to 2145430205 its reverse (5020345412), we get a palindrome (7165775617).

The spelling of 2145430205 in words is "two billion, one hundred forty-five million, four hundred thirty thousand, two hundred five".