123686046 has 48 divisors (see below), whose sum is σ = 298591488. Its totient is φ = 36680400.

The previous prime is 123686041. The next prime is 123686081. The reversal of 123686046 is 640686321.

123686046 is a `hidden beast` number, since 12 + 36 + 8 + 604 + 6 = 666.

It is a super-2 number, since 2×123686046² = 30596475950228232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123686046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123686041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2661 + ... + 15951.

It is an arithmetic number, because the mean of its divisors is an integer number (6220656).

Almost surely, 2^123686046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123686046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149295744).

123686046 is an abundant number, since it is smaller than the sum of its proper divisors (174905442).

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

123686046 is a wasteful number, since it uses less digits than its factorization.

123686046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13357 (or 13354 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 123686046 is about 11121.4228406261. The cubic root of 123686046 is about 498.2418866539.

The spelling of 123686046 in words is "one hundred twenty-three million, six hundred eighty-six thousand, forty-six".