1123210543 has 16 divisors (see below), whose sum is σ = 1442520576. Its totient is φ = 850053600.

The previous prime is 1123210541. The next prime is 1123210547. The reversal of 1123210543 is 3450123211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1123210543 - 2¹ = 1123210541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123210541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266233 + ... + 270418.

It is an arithmetic number, because the mean of its divisors is an integer number (90157536).

Almost surely, 2^1123210543 is an apocalyptic number.

1123210543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1123210543 is a deficient number, since it is larger than the sum of its proper divisors (319310033).

1123210543 is a wasteful number, since it uses less digits than its factorization.

1123210543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536694.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1123210543 is about 33514.3333963246. Note that the first 4 decimals coincide. The cubic root of 1123210543 is about 1039.4901788059.

Adding to 1123210543 its reverse (3450123211), we get a palindrome (4573333754).

The spelling of 1123210543 in words is "one billion, one hundred twenty-three million, two hundred ten thousand, five hundred forty-three".