123798456 has 40 divisors (see below), whose sum is σ = 346752120. Its totient is φ = 41265936.

The previous prime is 123798421. The next prime is 123798473. The reversal of 123798456 is 654897321.

123798456 is a `hidden beast` number, since 123 + 79 + 8 + 456 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 94876 + ... + 96171.

It is an arithmetic number, because the mean of its divisors is an integer number (8668803).

Almost surely, 2^123798456 is an apocalyptic number.

It is an amenable number.

123798456 is an abundant number, since it is smaller than the sum of its proper divisors (222953664).

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

123798456 is a wasteful number, since it uses less digits than its factorization.

123798456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191065 (or 191052 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 123798456 is about 11126.4754527209. The cubic root of 123798456 is about 498.3927805603.

The spelling of 123798456 in words is "one hundred twenty-three million, seven hundred ninety-eight thousand, four hundred fifty-six".