1123054143 has 32 divisors (see below), whose sum is σ = 1647378432. Its totient is φ = 678242400.

The previous prime is 1123054129. The next prime is 1123054169. The reversal of 1123054143 is 3414503211.

It is a happy number.

It is a Cunningham number, because it is equal to 33512²-1.

It is not a de Polignac number, because 1123054143 - 2²⁰ = 1122005567 is a prime.

It is a super-2 number, since 2×1123054143² = 2522501216218928898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123054123) 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, 94948 + ... + 106118.

It is an arithmetic number, because the mean of its divisors is an integer number (51480576).

Almost surely, 2^1123054143 is an apocalyptic number.

1123054143 is a deficient number, since it is larger than the sum of its proper divisors (524324289).

1123054143 is a wasteful number, since it uses less digits than its factorization.

1123054143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11275.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1123054143 is about 33511.9999850800. Note that the first 4 decimals coincide. The cubic root of 1123054143 is about 1039.4419290777.

Adding to 1123054143 its reverse (3414503211), we get a palindrome (4537557354).

The spelling of 1123054143 in words is "one billion, one hundred twenty-three million, fifty-four thousand, one hundred forty-three".