123051040240 has 40 divisors (see below), whose sum is σ = 286222894848. Its totient is φ = 49198183680.

The previous prime is 123051040237. The next prime is 123051040247. The reversal of 123051040240 is 42040150321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123051040247) 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, 168592 + ... + 523951.

Almost surely, 2^123051040240 is an apocalyptic number.

123051040240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123051040240 is an abundant number, since it is smaller than the sum of its proper divisors (163171854608).

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

123051040240 is a wasteful number, since it uses less digits than its factorization.

123051040240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694777 (or 694771 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 123051040240 its reverse (42040150321), we get a palindrome (165091190561).

The spelling of 123051040240 in words is "one hundred twenty-three billion, fifty-one million, forty thousand, two hundred forty".