115245242121123 has 12 divisors (see below), whose sum is σ = 170007165682848. Its totient is φ = 75195477128400.

The previous prime is 115245242120971. The next prime is 115245242121161. The reversal of 115245242121123 is 321121242542511.

115245242121123 is a `hidden beast` number, since 1 + 1 + 5 + 2 + 4 + 524 + 2 + 1 + 2 + 1 + 123 = 666.

It is not a de Polignac number, because 115245242121123 - 2²⁴ = 115245225343907 is a prime.

It is a super-2 number, since 2×115245242121123² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115245242121223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136223690028 + ... + 136223690873.

It is an arithmetic number, because the mean of its divisors is an integer number (14167263806904).

Almost surely, 2^{115245242121123} is an apocalyptic number.

115245242121123 is a deficient number, since it is larger than the sum of its proper divisors (54761923561725).

115245242121123 is a wasteful number, since it uses less digits than its factorization.

115245242121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272447380954 (or 272447380951 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

Adding to 115245242121123 its reverse (321121242542511), we get a palindrome (436366484663634).

The spelling of 115245242121123 in words is "one hundred fifteen trillion, two hundred forty-five billion, two hundred forty-two million, one hundred twenty-one thousand, one hundred twenty-three".