1123240043 has 8 divisors (see below), whose sum is σ = 1214314320. Its totient is φ = 1035361440.

The previous prime is 1123240039. The next prime is 1123240049. The reversal of 1123240043 is 3400423211.

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

It is a cyclic number.

It is not a de Polignac number, because 1123240043 - 2² = 1123240039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1123239997 and 1123240024.

It is not an unprimeable number, because it can be changed into a prime (1123240049) 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, 798188 + ... + 799593.

It is an arithmetic number, because the mean of its divisors is an integer number (151789290).

Almost surely, 2^1123240043 is an apocalyptic number.

1123240043 is a deficient number, since it is larger than the sum of its proper divisors (91074277).

1123240043 is a wasteful number, since it uses less digits than its factorization.

1123240043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597837.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1123240043 is about 33514.7735036357. The cubic root of 1123240043 is about 1039.4992791157.

Adding to 1123240043 its reverse (3400423211), we get a palindrome (4523663254).

The spelling of 1123240043 in words is "one billion, one hundred twenty-three million, two hundred forty thousand, forty-three".