124271605 has 4 divisors (see below), whose sum is σ = 149125932. Its totient is φ = 99417280.

The previous prime is 124271593. The next prime is 124271611. The reversal of 124271605 is 506172421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506172421 = 503 ⋅1006307.

It can be written as a sum of positive squares in 2 ways, for example, as 98128836 + 26142769 = 9906^2 + 5113^2 .

It is not a de Polignac number, because 124271605 - 2²¹ = 122174453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12427156 + ... + 12427165.

It is an arithmetic number, because the mean of its divisors is an integer number (37281483).

Almost surely, 2^124271605 is an apocalyptic number.

It is an amenable number.

124271605 is a deficient number, since it is larger than the sum of its proper divisors (24854327).

124271605 is an equidigital number, since it uses as much as digits as its factorization.

124271605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24854326.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 124271605 is about 11147.7174793767. The cubic root of 124271605 is about 499.0269141029.

The spelling of 124271605 in words is "one hundred twenty-four million, two hundred seventy-one thousand, six hundred five".