123946188 has 12 divisors (see below), whose sum is σ = 289207800. Its totient is φ = 41315392.

The previous prime is 123946187. The next prime is 123946219. The reversal of 123946188 is 881649321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (123946187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5164413 + ... + 5164436.

It is an arithmetic number, because the mean of its divisors is an integer number (24100650).

Almost surely, 2^123946188 is an apocalyptic number.

It is an amenable number.

123946188 is an abundant number, since it is smaller than the sum of its proper divisors (165261612).

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

123946188 is a wasteful number, since it uses less digits than its factorization.

123946188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10328856 (or 10328854 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 123946188 is about 11133.1122333335. The cubic root of 123946188 is about 498.5909502208.

The spelling of 123946188 in words is "one hundred twenty-three million, nine hundred forty-six thousand, one hundred eighty-eight".