123601856 has 28 divisors (see below), whose sum is σ = 280312368. Its totient is φ = 52972032.

The previous prime is 123601843. The next prime is 123601871. The reversal of 123601856 is 658106321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137501 + ... + 138396.

It is an arithmetic number, because the mean of its divisors is an integer number (10011156).

Almost surely, 2^123601856 is an apocalyptic number.

123601856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123601856 is an abundant number, since it is smaller than the sum of its proper divisors (156710512).

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

123601856 is an equidigital number, since it uses as much as digits as its factorization.

123601856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275916 (or 275906 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 123601856 is about 11117.6371590370. The cubic root of 123601856 is about 498.1288140619.

The spelling of 123601856 in words is "one hundred twenty-three million, six hundred one thousand, eight hundred fifty-six".