124620005 has 4 divisors (see below), whose sum is σ = 149544012. Its totient is φ = 99696000.

The previous prime is 124619987. The next prime is 124620017. The reversal of 124620005 is 500026421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500026421 = 73 ⋅6849677.

It can be written as a sum of positive squares in 2 ways, for example, as 66357316 + 58262689 = 8146^2 + 7633^2 .

It is not a de Polignac number, because 124620005 - 2⁶ = 124619941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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, 12461996 + ... + 12462005.

It is an arithmetic number, because the mean of its divisors is an integer number (37386003).

Almost surely, 2^124620005 is an apocalyptic number.

It is an amenable number.

124620005 is a deficient number, since it is larger than the sum of its proper divisors (24924007).

124620005 is an equidigital number, since it uses as much as digits as its factorization.

124620005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24924006.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 124620005 is about 11163.3330596198. Note that the first 3 decimals coincide. The cubic root of 124620005 is about 499.4928257224.

Adding to 124620005 its reverse (500026421), we get a palindrome (624646426).

The spelling of 124620005 in words is "one hundred twenty-four million, six hundred twenty thousand, five".