123959 has 8 divisors (see below), whose sum is σ = 138240. Its totient is φ = 110200.

The previous prime is 123953. The next prime is 123973. The reversal of 123959 is 959321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123959 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554 + ... + 744.

It is an arithmetic number, because the mean of its divisors is an integer number (17280).

2¹²³⁹⁵⁹ is an apocalyptic number.

123959 is a deficient number, since it is larger than the sum of its proper divisors (14281).

123959 is a wasteful number, since it uses less digits than its factorization.

123959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261.

The product of its digits is 2430, while the sum is 29.

The square root of 123959 is about 352.0781163322. The cubic root of 123959 is about 49.8608128985.

The spelling of 123959 in words is "one hundred twenty-three thousand, nine hundred fifty-nine".