124240055105 has 4 divisors (see below), whose sum is σ = 149088066132. Its totient is φ = 99392044080.

The previous prime is 124240055089. The next prime is 124240055113. The reversal of 124240055105 is 501550042421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501550042421 = 29 ⋅17294829049.

It can be written as a sum of positive squares in 2 ways, for example, as 97044087361 + 27195967744 = 311519^2 + 164912^2 .

It is not a de Polignac number, because 124240055105 - 2⁴ = 124240055089 is a prime.

It is a super-2 number, since 2×124240055105² (a number of 23 digits) contains 22 as substring.

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, 12424005506 + ... + 12424005515.

It is an arithmetic number, because the mean of its divisors is an integer number (37272016533).

Almost surely, 2^124240055105 is an apocalyptic number.

It is an amenable number.

124240055105 is a deficient number, since it is larger than the sum of its proper divisors (24848011027).

124240055105 is an equidigital number, since it uses as much as digits as its factorization.

124240055105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24848011026.

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 124240055105 its reverse (501550042421), we get a palindrome (625790097526).

The spelling of 124240055105 in words is "one hundred twenty-four billion, two hundred forty million, fifty-five thousand, one hundred five".