123561846 has 48 divisors (see below), whose sum is σ = 279951360. Its totient is φ = 39340080.

The previous prime is 123561839. The next prime is 123561859. The reversal of 123561846 is 648165321.

It is a happy number.

123561846 is a `hidden beast` number, since 1 + 2 + 35 + 618 + 4 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 123561846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42681 + ... + 45483.

It is an arithmetic number, because the mean of its divisors is an integer number (5832320).

Almost surely, 2^123561846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123561846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139975680).

123561846 is an abundant number, since it is smaller than the sum of its proper divisors (156389514).

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

123561846 is a wasteful number, since it uses less digits than its factorization.

123561846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921 (or 2918 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 123561846 is about 11115.8376202606. The cubic root of 123561846 is about 498.0750600560.

The spelling of 123561846 in words is "one hundred twenty-three million, five hundred sixty-one thousand, eight hundred forty-six".