123430144 has 36 divisors (see below), whose sum is σ = 257102496. Its totient is φ = 59028992.

The previous prime is 123430141. The next prime is 123430169. The reversal of 123430144 is 441034321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123430141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4594 + ... + 16369.

It is an arithmetic number, because the mean of its divisors is an integer number (7141736).

Almost surely, 2^123430144 is an apocalyptic number.

It is an amenable number.

123430144 is an abundant number, since it is smaller than the sum of its proper divisors (133672352).

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

123430144 is an equidigital number, since it uses as much as digits as its factorization.

123430144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21002 (or 20988 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 123430144 is about 11109.9119708484. The cubic root of 123430144 is about 497.8980345317.

Adding to 123430144 its reverse (441034321), we get a palindrome (564464465).

The spelling of 123430144 in words is "one hundred twenty-three million, four hundred thirty thousand, one hundred forty-four".