123355386 has 240 divisors, whose sum is σ = 370782720. Its totient is φ = 29937600.

The previous prime is 123355381. The next prime is 123355387. The reversal of 123355386 is 683553321.

123355386 is a `hidden beast` number, since 1 + 23 + 3 + 553 + 86 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 123355386.

It is not an unprimeable number, because it can be changed into a prime (123355381) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3979191 + ... + 3979221.

It is an arithmetic number, because the mean of its divisors is an integer number (1544928).

Almost surely, 2^123355386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123355386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185391360).

123355386 is an abundant number, since it is smaller than the sum of its proper divisors (247427334).

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

123355386 is a wasteful number, since it uses less digits than its factorization.

123355386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 83 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 123355386 is about 11106.5469881507. The cubic root of 123355386 is about 497.7974935096.

The spelling of 123355386 in words is "one hundred twenty-three million, three hundred fifty-five thousand, three hundred eighty-six".