123242032144 has 80 divisors (see below), whose sum is σ = 307304902656. Its totient is φ = 46467446400.

The previous prime is 123242032139. The next prime is 123242032157. The reversal of 123242032144 is 441230242321.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1575262 + ... + 1651645.

Almost surely, 2^123242032144 is an apocalyptic number.

123242032144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123242032144 is an abundant number, since it is smaller than the sum of its proper divisors (184062870512).

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

123242032144 is a wasteful number, since it uses less digits than its factorization.

123242032144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226964 (or 3226958 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 123242032144 its reverse (441230242321), we get a palindrome (564472274465).

The spelling of 123242032144 in words is "one hundred twenty-three billion, two hundred forty-two million, thirty-two thousand, one hundred forty-four".