123894456 has 64 divisors (see below), whose sum is σ = 362638080. Its totient is φ = 34533120.

The previous prime is 123894439. The next prime is 123894473. The reversal of 123894456 is 654498321.

It is an interprime number because it is at equal distance from previous prime (123894439) and next prime (123894473).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2106 + ... + 15881.

It is an arithmetic number, because the mean of its divisors is an integer number (5666220).

Almost surely, 2^123894456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123894456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181319040).

123894456 is an abundant number, since it is smaller than the sum of its proper divisors (238743624).

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

123894456 is a wasteful number, since it uses less digits than its factorization.

123894456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18044 (or 18040 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 123894456 is about 11130.7886513041. The cubic root of 123894456 is about 498.5215741560.

The spelling of 123894456 in words is "one hundred twenty-three million, eight hundred ninety-four thousand, four hundred fifty-six".