1123154032 has 160 divisors (see below), whose sum is σ = 3049804800. Its totient is φ = 386242560.

The previous prime is 1123154017. The next prime is 1123154057. The reversal of 1123154032 is 2304513211.

It is a happy number.

It is a super-2 number, since 2×1123154032² = 2522949959195714048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1123153994 and 1123154012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 366844 + ... + 369892.

It is an arithmetic number, because the mean of its divisors is an integer number (19061280).

Almost surely, 2^1123154032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123154032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1524902400).

1123154032 is an abundant number, since it is smaller than the sum of its proper divisors (1926650768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123154032 is a wasteful number, since it uses less digits than its factorization.

1123154032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111 (or 3105 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1123154032 is about 33513.4902986842. The cubic root of 1123154032 is about 1039.4727455606.

Adding to 1123154032 its reverse (2304513211), we get a palindrome (3427667243).

The spelling of 1123154032 in words is "one billion, one hundred twenty-three million, one hundred fifty-four thousand, thirty-two".