1123404100 has 144 divisors (see below), whose sum is σ = 3074553216. Its totient is φ = 346752000.

The previous prime is 1123404067. The next prime is 1123404151. The reversal of 1123404100 is 14043211.

It is a super-3 number, since 3×1123404100³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 371595 + ... + 374605.

It is an arithmetic number, because the mean of its divisors is an integer number (21351064).

Almost surely, 2^1123404100 is an apocalyptic number.

1123404100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123404100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1537276608).

1123404100 is an abundant number, since it is smaller than the sum of its proper divisors (1951149116).

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

1123404100 is a wasteful number, since it uses less digits than its factorization.

1123404100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3086 (or 3079 counting only the distinct ones).

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

The square root of 1123404100 is about 33517.2209468506. The cubic root of 1123404100 is about 1039.5498853455.

Adding to 1123404100 its reverse (14043211), we get a palindrome (1137447311).

The spelling of 1123404100 in words is "one billion, one hundred twenty-three million, four hundred four thousand, one hundred".