124591849249 has 20 divisors (see below), whose sum is σ = 149276953364. Its totient is φ = 103906641888.

The previous prime is 124591849247. The next prime is 124591849259. The reversal of 124591849249 is 942948195421.

It can be written as a sum of positive squares in 2 ways, for example, as 84858603025 + 39733246224 = 291305^2 + 199332^2 .

It is not a de Polignac number, because 124591849249 - 2¹ = 124591849247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124591849193 and 124591849202.

It is not an unprimeable number, because it can be changed into a prime (124591849243) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 612402 + ... + 790075.

Almost surely, 2^124591849249 is an apocalyptic number.

It is an amenable number.

124591849249 is a deficient number, since it is larger than the sum of its proper divisors (24685104115).

124591849249 is an frugal number, since it uses more digits than its factorization.

124591849249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402542 (or 1402521 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 58.

The spelling of 124591849249 in words is "one hundred twenty-four billion, five hundred ninety-one million, eight hundred forty-nine thousand, two hundred forty-nine".