123428124 has 30 divisors (see below), whose sum is σ = 322666344. Its totient is φ = 41142600.

The previous prime is 123428113. The next prime is 123428141. The reversal of 123428124 is 421824321.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 190152 + ... + 190799.

Almost surely, 2^123428124 is an apocalyptic number.

It is an amenable number.

123428124 is an abundant number, since it is smaller than the sum of its proper divisors (199238220).

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

123428124 is a wasteful number, since it uses less digits than its factorization.

123428124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380967 (or 380956 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 123428124 is about 11109.8210606652. The cubic root of 123428124 is about 497.8953183948.

The spelling of 123428124 in words is "one hundred twenty-three million, four hundred twenty-eight thousand, one hundred twenty-four".