123405230 has 32 divisors (see below), whose sum is σ = 242119584. Its totient is φ = 45012096.

The previous prime is 123405229. The next prime is 123405239. The reversal of 123405230 is 32504321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123405239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5072 + ... + 16508.

It is an arithmetic number, because the mean of its divisors is an integer number (7566237).

Almost surely, 2^123405230 is an apocalyptic number.

123405230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123405230 is a deficient number, since it is larger than the sum of its proper divisors (118714354).

123405230 is a wasteful number, since it uses less digits than its factorization.

123405230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11540.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 123405230 is about 11108.7906632540. The cubic root of 123405230 is about 497.8645325417.

Adding to 123405230 its reverse (32504321), we get a palindrome (155909551).

Subtracting from 123405230 its reverse (32504321), we obtain a palindrome (90900909).

The spelling of 123405230 in words is "one hundred twenty-three million, four hundred five thousand, two hundred thirty".