123859559 has 2 divisors, whose sum is σ = 123859560. Its totient is φ = 123859558.

The previous prime is 123859553. The next prime is 123859627. The reversal of 123859559 is 955958321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123859559 - 2⁸ = 123859303 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123859553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61929779 + 61929780.

It is an arithmetic number, because the mean of its divisors is an integer number (61929780).

Almost surely, 2^123859559 is an apocalyptic number.

123859559 is a deficient number, since it is larger than the sum of its proper divisors (1).

123859559 is an equidigital number, since it uses as much as digits as its factorization.

123859559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486000, while the sum is 47.

The square root of 123859559 is about 11129.2209520703. The cubic root of 123859559 is about 498.4747640415.

The spelling of 123859559 in words is "one hundred twenty-three million, eight hundred fifty-nine thousand, five hundred fifty-nine".