123390386 has 16 divisors (see below), whose sum is σ = 223969536. Its totient is φ = 49770816.

The previous prime is 123390383. The next prime is 123390419. The reversal of 123390386 is 683093321.

It is not an unprimeable number, because it can be changed into a prime (123390383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258986 + ... + 259461.

It is an arithmetic number, because the mean of its divisors is an integer number (13998096).

Almost surely, 2^123390386 is an apocalyptic number.

123390386 is a deficient number, since it is larger than the sum of its proper divisors (100579150).

123390386 is a wasteful number, since it uses less digits than its factorization.

123390386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518473.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 123390386 is about 11108.1225236311. The cubic root of 123390386 is about 497.8445695913.

It can be divided in two parts, 1233 and 90386, that added together give a palindrome (91619).

The spelling of 123390386 in words is "one hundred twenty-three million, three hundred ninety thousand, three hundred eighty-six".