1123130042 has 32 divisors (see below), whose sum is σ = 1751915520. Its totient is φ = 539593920.

The previous prime is 1123129991. The next prime is 1123130053. The reversal of 1123130042 is 2400313211.

It is a super-2 number, since 2×1123130042² = 2522842182485843528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123130042.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3236513 + ... + 3236859.

It is an arithmetic number, because the mean of its divisors is an integer number (54747360).

Almost surely, 2^1123130042 is an apocalyptic number.

1123130042 is a deficient number, since it is larger than the sum of its proper divisors (628785478).

1123130042 is a wasteful number, since it uses less digits than its factorization.

1123130042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1123130042 is about 33513.1323812024. The cubic root of 1123130042 is about 1039.4653446379.

Adding to 1123130042 its reverse (2400313211), we get a palindrome (3523443253).

The spelling of 1123130042 in words is "one billion, one hundred twenty-three million, one hundred thirty thousand, forty-two".