1423203245 has 4 divisors (see below), whose sum is σ = 1707843900. Its totient is φ = 1138562592.

The previous prime is 1423203233. The next prime is 1423203259. The reversal of 1423203245 is 5423023241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5423023241 = 6257 ⋅866713.

It can be written as a sum of positive squares in 2 ways, for example, as 670084996 + 753118249 = 25886^2 + 27443^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423203245 - 2²⁶ = 1356094381 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142320320 + ... + 142320329.

It is an arithmetic number, because the mean of its divisors is an integer number (426960975).

Almost surely, 2^1423203245 is an apocalyptic number.

It is an amenable number.

1423203245 is a deficient number, since it is larger than the sum of its proper divisors (284640655).

1423203245 is an equidigital number, since it uses as much as digits as its factorization.

1423203245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284640654.

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

The square root of 1423203245 is about 37725.3660684691. The cubic root of 1423203245 is about 1124.8353984694.

Adding to 1423203245 its reverse (5423023241), we get a palindrome (6846226486).

The spelling of 1423203245 in words is "one billion, four hundred twenty-three million, two hundred three thousand, two hundred forty-five".