123242413440 has 128 divisors (see below), whose sum is σ = 398368523520. Its totient is φ = 32401725440.

The previous prime is 123242413433. The next prime is 123242413471. The reversal of 123242413440 is 44314242321.

It is a tau number, because it is divible by the number of its divisors (128).

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 = 123242413398 and 123242413407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315714 + ... + 588353.

It is an arithmetic number, because the mean of its divisors is an integer number (3112254090).

Almost surely, 2^123242413440 is an apocalyptic number.

123242413440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123242413440 is an abundant number, since it is smaller than the sum of its proper divisors (275126110080).

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

123242413440 is an equidigital number, since it uses as much as digits as its factorization.

123242413440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904160 (or 904148 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 123242413440 its reverse (44314242321), we get a palindrome (167556655761).

The spelling of 123242413440 in words is "one hundred twenty-three billion, two hundred forty-two million, four hundred thirteen thousand, four hundred forty".