1123042012 has 12 divisors (see below), whose sum is σ = 1976182936. Its totient is φ = 558418320.

The previous prime is 1123041977. The next prime is 1123042043. The reversal of 1123042012 is 2102403211.

It is a super-2 number, since 2×1123042012² = 2522446721434016288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774858 + ... + 776305.

Almost surely, 2^1123042012 is an apocalyptic number.

It is an amenable number.

1123042012 is a deficient number, since it is larger than the sum of its proper divisors (853140924).

1123042012 is a wasteful number, since it uses less digits than its factorization.

1123042012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551348 (or 1551346 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1123042012 is about 33511.8189897236. The cubic root of 1123042012 is about 1039.4381864515.

Adding to 1123042012 its reverse (2102403211), we get a palindrome (3225445223).

The spelling of 1123042012 in words is "one billion, one hundred twenty-three million, forty-two thousand, twelve".