1121035243 has 16 divisors (see below), whose sum is σ = 1168009920. Its totient is φ = 1075161600.

The previous prime is 1121035219. The next prime is 1121035261. The reversal of 1121035243 is 3425301211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1121035243 - 2⁹ = 1121034731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121035273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611338 + ... + 613168.

It is an arithmetic number, because the mean of its divisors is an integer number (73000620).

Almost surely, 2^1121035243 is an apocalyptic number.

1121035243 is a deficient number, since it is larger than the sum of its proper divisors (46974677).

1121035243 is a wasteful number, since it uses less digits than its factorization.

1121035243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1121035243 is about 33481.8643895468. The cubic root of 1121035243 is about 1038.8186916672.

Adding to 1121035243 its reverse (3425301211), we get a palindrome (4546336454).

The spelling of 1121035243 in words is "one billion, one hundred twenty-one million, thirty-five thousand, two hundred forty-three".