123755849 has 16 divisors (see below), whose sum is σ = 145292928. Its totient is φ = 103203072.

The previous prime is 123755843. The next prime is 123755867. The reversal of 123755849 is 948557321.

It is not a de Polignac number, because 123755849 - 2⁴ = 123755833 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123755843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94769 + ... + 96065.

It is an arithmetic number, because the mean of its divisors is an integer number (9080808).

Almost surely, 2^123755849 is an apocalyptic number.

It is an amenable number.

123755849 is a deficient number, since it is larger than the sum of its proper divisors (21537079).

123755849 is a wasteful number, since it uses less digits than its factorization.

123755849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664.

The product of its digits is 302400, while the sum is 44.

The square root of 123755849 is about 11124.5606205369. The cubic root of 123755849 is about 498.3355976775.

The spelling of 123755849 in words is "one hundred twenty-three million, seven hundred fifty-five thousand, eight hundred forty-nine".