123559873 has 6 divisors (see below), whose sum is σ = 125348822. Its totient is φ = 121773600.

The previous prime is 123559847. The next prime is 123559879. The reversal of 123559873 is 378955321.

It can be written as a sum of positive squares in 3 ways, for example, as 12194064 + 111365809 = 3492^2 + 10553^2 .

It is not a de Polignac number, because 123559873 - 2²⁵ = 90005441 is a prime.

It is a super-2 number, since 2×123559873² = 30534084431552258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123559879) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 94323 + ... + 95623.

Almost surely, 2^123559873 is an apocalyptic number.

It is an amenable number.

123559873 is a deficient number, since it is larger than the sum of its proper divisors (1788949).

123559873 is an frugal number, since it uses more digits than its factorization.

123559873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675 (or 1374 counting only the distinct ones).

The product of its digits is 226800, while the sum is 43.

The square root of 123559873 is about 11115.7488726581. The cubic root of 123559873 is about 498.0724090021.

The spelling of 123559873 in words is "one hundred twenty-three million, five hundred fifty-nine thousand, eight hundred seventy-three".