123411101240 has 32 divisors (see below), whose sum is σ = 317342832480. Its totient is φ = 42312377472.

The previous prime is 123411101237. The next prime is 123411101249. The reversal of 123411101240 is 42101114321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123411101249) 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, 220376687 + ... + 220377246.

It is an arithmetic number, because the mean of its divisors is an integer number (9916963515).

Almost surely, 2^123411101240 is an apocalyptic number.

123411101240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123411101240 is an abundant number, since it is smaller than the sum of its proper divisors (193931731240).

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

123411101240 is a wasteful number, since it uses less digits than its factorization.

123411101240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440753951 (or 440753947 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 123411101240 its reverse (42101114321), we get a palindrome (165512215561).

The spelling of 123411101240 in words is "one hundred twenty-three billion, four hundred eleven million, one hundred one thousand, two hundred forty".