123598 has 8 divisors (see below), whose sum is σ = 191880. Its totient is φ = 59640.

The previous prime is 123593. The next prime is 123601. The reversal of 123598 is 895321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008 + ... + 1123.

It is an arithmetic number, because the mean of its divisors is an integer number (23985).

2¹²³⁵⁹⁸ is an apocalyptic number.

123598 is a deficient number, since it is larger than the sum of its proper divisors (68282).

123598 is a wasteful number, since it uses less digits than its factorization.

123598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162.

The product of its digits is 2160, while the sum is 28.

The square root of 123598 is about 351.5650722128. The cubic root of 123598 is about 49.8123633976.

The spelling of 123598 in words is "one hundred twenty-three thousand, five hundred ninety-eight".