1123423404840 has 96 divisors (see below), whose sum is σ = 3983046631200. Its totient is φ = 272345066880.

The previous prime is 1123423404839. The next prime is 1123423404877. The reversal of 1123423404840 is 484043243211.

1123423404840 is a `hidden beast` number, since 1 + 1 + 234 + 2 + 340 + 4 + 84 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1123423404795 and 1123423404804.

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 23 ways as a sum of consecutive naturals, for example, 141842430 + ... + 141850349.

It is an arithmetic number, because the mean of its divisors is an integer number (41490069075).

Almost surely, 2^{1123423404840} is an apocalyptic number.

1123423404840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123423404840 is an abundant number, since it is smaller than the sum of its proper divisors (2859623226360).

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

1123423404840 is a wasteful number, since it uses less digits than its factorization.

1123423404840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283692807 (or 283692800 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The spelling of 1123423404840 in words is "one trillion, one hundred twenty-three billion, four hundred twenty-three million, four hundred four thousand, eight hundred forty".