1100075243 has 4 divisors (see below), whose sum is σ = 1157973960. Its totient is φ = 1042176528.

The previous prime is 1100075213. The next prime is 1100075309. The reversal of 1100075243 is 3425700011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3425700011 = 2683 ⋅1276817.

It is a cyclic number.

It is not a de Polignac number, because 1100075243 - 2²⁰ = 1099026667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100075203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28949330 + ... + 28949367.

It is an arithmetic number, because the mean of its divisors is an integer number (289493490).

Almost surely, 2^1100075243 is an apocalyptic number.

1100075243 is a deficient number, since it is larger than the sum of its proper divisors (57898717).

1100075243 is an equidigital number, since it uses as much as digits as its factorization.

1100075243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57898716.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 1100075243 is about 33167.3822150618. The cubic root of 1100075243 is about 1032.3036518448.

Adding to 1100075243 its reverse (3425700011), we get a palindrome (4525775254).

The spelling of 1100075243 in words is "one billion, one hundred million, seventy-five thousand, two hundred forty-three".