123098 has 8 divisors (see below), whose sum is σ = 187860. Its totient is φ = 60480.

The previous prime is 123091. The next prime is 123113. The reversal of 123098 is 890321.

It can be written as a sum of positive squares in 2 ways, for example, as 104329 + 18769 = 323^2 + 137^2 .

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

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (123091) 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, 383 + ... + 626.

2¹²³⁰⁹⁸ is an apocalyptic number.

123098 is a deficient number, since it is larger than the sum of its proper divisors (64762).

123098 is a wasteful number, since it uses less digits than its factorization.

123098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 123098 is about 350.8532456740. The cubic root of 123098 is about 49.7451027561.

The spelling of 123098 in words is "one hundred twenty-three thousand, ninety-eight".