1123423143 has 8 divisors (see below), whose sum is σ = 1498480368. Its totient is φ = 748657344.

The previous prime is 1123423079. The next prime is 1123423157. The reversal of 1123423143 is 3413243211.

It is a happy number.

1123423143 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1123423143 - 2⁶ = 1123423079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123423243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63696 + ... + 79397.

It is an arithmetic number, because the mean of its divisors is an integer number (187310046).

Almost surely, 2^1123423143 is an apocalyptic number.

1123423143 is a deficient number, since it is larger than the sum of its proper divisors (375057225).

1123423143 is a wasteful number, since it uses less digits than its factorization.

1123423143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145713.

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

The square root of 1123423143 is about 33517.5050234948. The cubic root of 1123423143 is about 1039.5557591703. Note that the first 3 decimals are identical.

Adding to 1123423143 its reverse (3413243211), we get a palindrome (4536666354).

The spelling of 1123423143 in words is "one billion, one hundred twenty-three million, four hundred twenty-three thousand, one hundred forty-three".