1100243 has 2 divisors, whose sum is σ = 1100244. Its totient is φ = 1100242.

The previous prime is 1100219. The next prime is 1100249. The reversal of 1100243 is 3420011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1100243 - 2⁶ = 1100179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1100249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550121 + 550122.

It is an arithmetic number, because the mean of its divisors is an integer number (550122).

2^1100243 is an apocalyptic number.

1100243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100243 is an equidigital number, since it uses as much as digits as its factorization.

1100243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1100243 is about 1048.9246874776. The cubic root of 1100243 is about 103.2356123214.

Adding to 1100243 its reverse (3420011), we get a palindrome (4520254).

The spelling of 1100243 in words is "one million, one hundred thousand, two hundred forty-three".