124013605 has 4 divisors (see below), whose sum is σ = 148816332. Its totient is φ = 99210880.

The previous prime is 124013581. The next prime is 124013651. The reversal of 124013605 is 506310421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506310421 = 3257 ⋅155453.

It can be written as a sum of positive squares in 2 ways, for example, as 50722884 + 73290721 = 7122^2 + 8561^2 .

It is not a de Polignac number, because 124013605 - 2²¹ = 121916453 is a prime.

It is a Duffinian 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, 12401356 + ... + 12401365.

It is an arithmetic number, because the mean of its divisors is an integer number (37204083).

Almost surely, 2^124013605 is an apocalyptic number.

It is an amenable number.

124013605 is a deficient number, since it is larger than the sum of its proper divisors (24802727).

124013605 is an equidigital number, since it uses as much as digits as its factorization.

124013605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24802726.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 124013605 is about 11136.1395914383. The cubic root of 124013605 is about 498.6813319532.

The spelling of 124013605 in words is "one hundred twenty-four million, thirteen thousand, six hundred five".