1123421231424 has 224 divisors, whose sum is σ = 3098200803840. Its totient is φ = 358975438848.

The previous prime is 1123421231423. The next prime is 1123421231431. The reversal of 1123421231424 is 4241321243211.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1123421231391 and 1123421231400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123421231423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 339093192 + ... + 339096504.

Almost surely, 2^{1123421231424} 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 1123421231424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1549100401920).

1123421231424 is an abundant number, since it is smaller than the sum of its proper divisors (1974779572416).

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

1123421231424 is a wasteful number, since it uses less digits than its factorization.

1123421231424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4137 (or 4127 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

Adding to 1123421231424 its reverse (4241321243211), we get a palindrome (5364742474635).

The spelling of 1123421231424 in words is "one trillion, one hundred twenty-three billion, four hundred twenty-one million, two hundred thirty-one thousand, four hundred twenty-four".