123689298 has 16 divisors (see below), whose sum is σ = 254064960. Its totient is φ = 40115376.

The previous prime is 123689257. The next prime is 123689299. The reversal of 123689298 is 892986321.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123689299) 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, 278358 + ... + 278801.

It is an arithmetic number, because the mean of its divisors is an integer number (15879060).

Almost surely, 2^123689298 is an apocalyptic number.

123689298 is an abundant number, since it is smaller than the sum of its proper divisors (130375662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123689298 is a wasteful number, since it uses less digits than its factorization.

123689298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557201.

The product of its digits is 373248, while the sum is 48.

The square root of 123689298 is about 11121.5690439794. The cubic root of 123689298 is about 498.2462532700.

The spelling of 123689298 in words is "one hundred twenty-three million, six hundred eighty-nine thousand, two hundred ninety-eight".