1123312042 has 16 divisors (see below), whose sum is σ = 1818858240. Its totient is φ = 518710192.

The previous prime is 1123312027. The next prime is 1123312049. The reversal of 1123312042 is 2402133211.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1123312049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419698 + ... + 422365.

It is an arithmetic number, because the mean of its divisors is an integer number (113678640).

Almost surely, 2^1123312042 is an apocalyptic number.

1123312042 is a deficient number, since it is larger than the sum of its proper divisors (695546198).

1123312042 is a wasteful number, since it uses less digits than its factorization.

1123312042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842117.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1123312042 is about 33515.8476246685. The cubic root of 1123312042 is about 1039.5214890639.

Adding to 1123312042 its reverse (2402133211), we get a palindrome (3525445253).

The spelling of 1123312042 in words is "one billion, one hundred twenty-three million, three hundred twelve thousand, forty-two".