123157386 has 48 divisors (see below), whose sum is σ = 298984608. Its totient is φ = 36309600.

The previous prime is 123157379. The next prime is 123157427. The reversal of 123157386 is 683751321.

123157386 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 573 + 86 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 123157386.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1080 + ... + 15731.

It is an arithmetic number, because the mean of its divisors is an integer number (6228846).

Almost surely, 2^123157386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123157386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149492304).

123157386 is an abundant number, since it is smaller than the sum of its proper divisors (175827222).

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

123157386 is a wasteful number, since it uses less digits than its factorization.

123157386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16867 (or 16864 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 123157386 is about 11097.6297469325. The cubic root of 123157386 is about 497.5310095736.

It can be divided in two parts, 12315 and 7386, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 123157386 in words is "one hundred twenty-three million, one hundred fifty-seven thousand, three hundred eighty-six".