1155051123 has 24 divisors (see below), whose sum is σ = 1574899200. Its totient is φ = 752978160.

The previous prime is 1155051119. The next prime is 1155051143. The reversal of 1155051123 is 3211505511.

1155051123 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1155051123 - 2² = 1155051119 is a prime.

It is a super-2 number, since 2×1155051123² = 2668286193487122258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1155051093 and 1155051102.

It is not an unprimeable number, because it can be changed into a prime (1155051143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2679718 + ... + 2680148.

It is an arithmetic number, because the mean of its divisors is an integer number (65620800).

Almost surely, 2^1155051123 is an apocalyptic number.

1155051123 is a deficient number, since it is larger than the sum of its proper divisors (419848077).

1155051123 is an equidigital number, since it uses as much as digits as its factorization.

1155051123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 1155051123 is about 33986.0430618217. The cubic root of 1155051123 is about 1049.2212284336.

Adding to 1155051123 its reverse (3211505511), we get a palindrome (4366556634).

The spelling of 1155051123 in words is "one billion, one hundred fifty-five million, fifty-one thousand, one hundred twenty-three".