123027840 has 384 divisors, whose sum is σ = 481178880. Its totient is φ = 28753920.

The previous prime is 123027833. The next prime is 123027841. The reversal of 123027840 is 48720321.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123027841) 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, 2321254 + ... + 2321306.

It is an arithmetic number, because the mean of its divisors is an integer number (1253070).

Almost surely, 2^123027840 is an apocalyptic number.

123027840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123027840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240589440).

123027840 is an abundant number, since it is smaller than the sum of its proper divisors (358151040).

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

123027840 is a wasteful number, since it uses less digits than its factorization.

123027840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 123027840 is about 11091.7915595273. The cubic root of 123027840 is about 497.3565017985.

The spelling of 123027840 in words is "one hundred twenty-three million, twenty-seven thousand, eight hundred forty".