124112531155 has 4 divisors (see below), whose sum is σ = 148935037392. Its totient is φ = 99290024920.

The previous prime is 124112531129. The next prime is 124112531173. The reversal of 124112531155 is 551135211421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551135211421 = 44221 ⋅12463201.

It is not a de Polignac number, because 124112531155 - 2²⁷ = 123978313427 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12411253111 + ... + 12411253120.

It is an arithmetic number, because the mean of its divisors is an integer number (37233759348).

Almost surely, 2^124112531155 is an apocalyptic number.

124112531155 is a deficient number, since it is larger than the sum of its proper divisors (24822506237).

124112531155 is an equidigital number, since it uses as much as digits as its factorization.

124112531155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24822506236.

The product of its digits is 6000, while the sum is 31.

Adding to 124112531155 its reverse (551135211421), we get a palindrome (675247742576).

The spelling of 124112531155 in words is "one hundred twenty-four billion, one hundred twelve million, five hundred thirty-one thousand, one hundred fifty-five".