124405055 has 4 divisors (see below), whose sum is σ = 149286072. Its totient is φ = 99524040.

The previous prime is 124405051. The next prime is 124405087. The reversal of 124405055 is 550504421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550504421 = 17 ⋅32382613.

It is not a de Polignac number, because 124405055 - 2² = 124405051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124405051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12440501 + ... + 12440510.

It is an arithmetic number, because the mean of its divisors is an integer number (37321518).

Almost surely, 2^124405055 is an apocalyptic number.

124405055 is a deficient number, since it is larger than the sum of its proper divisors (24881017).

124405055 is an equidigital number, since it uses as much as digits as its factorization.

124405055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24881016.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 124405055 is about 11153.7014035700. The cubic root of 124405055 is about 499.2054781388.

Adding to 124405055 its reverse (550504421), we get a palindrome (674909476).

The spelling of 124405055 in words is "one hundred twenty-four million, four hundred five thousand, fifty-five".