123428218 has 8 divisors (see below), whose sum is σ = 194886720. Its totient is φ = 58465980.

The previous prime is 123428213. The next prime is 123428231. The reversal of 123428218 is 812824321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 123428218.

It is not an unprimeable number, because it can be changed into a prime (123428213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1624018 + ... + 1624093.

It is an arithmetic number, because the mean of its divisors is an integer number (24360840).

Almost surely, 2^123428218 is an apocalyptic number.

123428218 is a deficient number, since it is larger than the sum of its proper divisors (71458502).

123428218 is a wasteful number, since it uses less digits than its factorization.

123428218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248132.

The product of its digits is 6144, while the sum is 31.

The square root of 123428218 is about 11109.8252911556. The cubic root of 123428218 is about 497.8954447899.

The spelling of 123428218 in words is "one hundred twenty-three million, four hundred twenty-eight thousand, two hundred eighteen".