1155240242103 has 16 divisors (see below), whose sum is σ = 1631036830176. Its totient is φ = 724807987200.

The previous prime is 1155240242081. The next prime is 1155240242129. The reversal of 1155240242103 is 3012420425511.

It is not a de Polignac number, because 1155240242103 - 2¹⁴ = 1155240225719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155240242183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15303 + ... + 1520103.

It is an arithmetic number, because the mean of its divisors is an integer number (101939801886).

Almost surely, 2^{1155240242103} is an apocalyptic number.

1155240242103 is a deficient number, since it is larger than the sum of its proper divisors (475796588073).

1155240242103 is a wasteful number, since it uses less digits than its factorization.

1155240242103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519874.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 1155240242103 its reverse (3012420425511), we get a palindrome (4167660667614).

The spelling of 1155240242103 in words is "one trillion, one hundred fifty-five billion, two hundred forty million, two hundred forty-two thousand, one hundred three".