1002355243 has 2 divisors, whose sum is σ = 1002355244. Its totient is φ = 1002355242.

The previous prime is 1002355201. The next prime is 1002355267. The reversal of 1002355243 is 3425532001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002355243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002355273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501177621 + 501177622.

It is an arithmetic number, because the mean of its divisors is an integer number (501177622).

Almost surely, 2^1002355243 is an apocalyptic number.

1002355243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002355243 is an equidigital number, since it uses as much as digits as its factorization.

1002355243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1002355243 is about 31659.9943619704. The cubic root of 1002355243 is about 1000.7844654530.

Adding to 1002355243 its reverse (3425532001), we get a palindrome (4427887244).

The spelling of 1002355243 in words is "one billion, two million, three hundred fifty-five thousand, two hundred forty-three".