123861006 has 12 divisors (see below), whose sum is σ = 268365552. Its totient is φ = 41286996.

The previous prime is 123860987. The next prime is 123861029. The reversal of 123861006 is 600168321.

123861006 is a `hidden beast` number, since 12 + 38 + 610 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3440566 + ... + 3440601.

It is an arithmetic number, because the mean of its divisors is an integer number (22363796).

Almost surely, 2^123861006 is an apocalyptic number.

123861006 is an abundant number, since it is smaller than the sum of its proper divisors (144504546).

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

123861006 is a wasteful number, since it uses less digits than its factorization.

123861006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6881175 (or 6881172 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 123861006 is about 11129.2859609231. The cubic root of 123861006 is about 498.4767051921.

The spelling of 123861006 in words is "one hundred twenty-three million, eight hundred sixty-one thousand, six".