123427668 has 144 divisors (see below), whose sum is σ = 367692864. Its totient is φ = 31933440.

The previous prime is 123427663. The next prime is 123427693. The reversal of 123427668 is 866724321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123427663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 512028 + ... + 512268.

Almost surely, 2^123427668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123427668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183846432).

123427668 is an abundant number, since it is smaller than the sum of its proper divisors (244265196).

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

123427668 is a wasteful number, since it uses less digits than its factorization.

123427668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 333 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 123427668 is about 11109.8005382635. The cubic root of 123427668 is about 497.8947052429.

The spelling of 123427668 in words is "one hundred twenty-three million, four hundred twenty-seven thousand, six hundred sixty-eight".