1123140442 has 8 divisors (see below), whose sum is σ = 1685807136. Its totient is φ = 561204732.

The previous prime is 1123140419. The next prime is 1123140443. The reversal of 1123140442 is 2440413211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1123140442² = 2522888904911910728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1123140443) 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, 178888 + ... + 185059.

It is an arithmetic number, because the mean of its divisors is an integer number (210725892).

Almost surely, 2^1123140442 is an apocalyptic number.

1123140442 is a deficient number, since it is larger than the sum of its proper divisors (562666694).

1123140442 is a wasteful number, since it uses less digits than its factorization.

1123140442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365492.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1123140442 is about 33513.2875438982. The cubic root of 1123140442 is about 1039.4685530542.

Adding to 1123140442 its reverse (2440413211), we get a palindrome (3563553653).

The spelling of 1123140442 in words is "one billion, one hundred twenty-three million, one hundred forty thousand, four hundred forty-two".