123333401240 has 128 divisors (see below), whose sum is σ = 324128563200. Its totient is φ = 41355663360.

The previous prime is 123333401227. The next prime is 123333401249. The reversal of 123333401240 is 42104333321.

It is a super-2 number, since 2×123333401240² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123333401249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24619856 + ... + 24624864.

It is an arithmetic number, because the mean of its divisors is an integer number (2532254400).

Almost surely, 2^123333401240 is an apocalyptic number.

123333401240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123333401240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162064281600).

123333401240 is an abundant number, since it is smaller than the sum of its proper divisors (200795161960).

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

123333401240 is a wasteful number, since it uses less digits than its factorization.

123333401240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6945 (or 6941 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 123333401240 its reverse (42104333321), we get a palindrome (165437734561).

The spelling of 123333401240 in words is "one hundred twenty-three billion, three hundred thirty-three million, four hundred one thousand, two hundred forty".