1123423143000 has 128 divisors (see below), whose sum is σ = 3506444061120. Its totient is φ = 299462937600.

The previous prime is 1123423142987. The next prime is 1123423143019. The reversal of 1123423143000 is 3413243211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 7779454 + ... + 7922546.

Almost surely, 2^{1123423143000} is an apocalyptic number.

1123423143000 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 1123423143000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1753222030560).

1123423143000 is an abundant number, since it is smaller than the sum of its proper divisors (2383020918120).

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

1123423143000 is a wasteful number, since it uses less digits than its factorization.

1123423143000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145734 (or 145720 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1123423143000 its reverse (3413243211), we get a palindrome (1126836386211).

The spelling of 1123423143000 in words is "one trillion, one hundred twenty-three billion, four hundred twenty-three million, one hundred forty-three thousand".