124789138 has 8 divisors (see below), whose sum is σ = 187721100. Its totient is φ = 62215440.

The previous prime is 124789127. The next prime is 124789153. The reversal of 124789138 is 831987421.

It can be written as a sum of positive squares in 2 ways, for example, as 123054649 + 1734489 = 11093^2 + 1317^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 124789094 and 124789103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88693 + ... + 90088.

Almost surely, 2^124789138 is an apocalyptic number.

124789138 is a deficient number, since it is larger than the sum of its proper divisors (62931962).

124789138 is a wasteful number, since it uses less digits than its factorization.

124789138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179132.

The product of its digits is 96768, while the sum is 43.

The square root of 124789138 is about 11170.9058719515. The cubic root of 124789138 is about 499.7186924284.

The spelling of 124789138 in words is "one hundred twenty-four million, seven hundred eighty-nine thousand, one hundred thirty-eight".