123243894 has 24 divisors (see below), whose sum is σ = 267883200. Its totient is φ = 40949808.

The previous prime is 123243893. The next prime is 123243943. The reversal of 123243894 is 498342321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123243893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5094 + ... + 16505.

It is an arithmetic number, because the mean of its divisors is an integer number (11161800).

Almost surely, 2^123243894 is an apocalyptic number.

123243894 is an abundant number, since it is smaller than the sum of its proper divisors (144639306).

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

123243894 is a wasteful number, since it uses less digits than its factorization.

123243894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21924 (or 21921 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 123243894 is about 11101.5266517718. The cubic root of 123243894 is about 497.6474739353.

The spelling of 123243894 in words is "one hundred twenty-three million, two hundred forty-three thousand, eight hundred ninety-four".