1023021243 has 12 divisors (see below), whose sum is σ = 1479901800. Its totient is φ = 680996736.

The previous prime is 1023021227. The next prime is 1023021247. The reversal of 1023021243 is 3421203201.

It is not a de Polignac number, because 1023021243 - 2⁴ = 1023021227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1023021247) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 78393 + ... + 90506.

It is an arithmetic number, because the mean of its divisors is an integer number (123325150).

Almost surely, 2^1023021243 is an apocalyptic number.

1023021243 is a deficient number, since it is larger than the sum of its proper divisors (456880557).

1023021243 is a wasteful number, since it uses less digits than its factorization.

1023021243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169578 (or 169575 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1023021243 is about 31984.7032657800. The cubic root of 1023021243 is about 1007.6156030288.

Adding to 1023021243 its reverse (3421203201), we get a palindrome (4444224444).

The spelling of 1023021243 in words is "one billion, twenty-three million, twenty-one thousand, two hundred forty-three".