123442233240 has 64 divisors (see below), whose sum is σ = 370587456000. Its totient is φ = 32894750592.

The previous prime is 123442233221. The next prime is 123442233251. The reversal of 123442233240 is 42332244321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 123442233198 and 123442233207.

It is a congruent number.

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, 190690 + ... + 532209.

It is an arithmetic number, because the mean of its divisors is an integer number (5790429000).

Almost surely, 2^123442233240 is an apocalyptic number.

123442233240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123442233240 is an abundant number, since it is smaller than the sum of its proper divisors (247145222760).

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

123442233240 is a wasteful number, since it uses less digits than its factorization.

123442233240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724336 (or 724332 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 123442233240 its reverse (42332244321), we get a palindrome (165774477561).

The spelling of 123442233240 in words is "one hundred twenty-three billion, four hundred forty-two million, two hundred thirty-three thousand, two hundred forty".