122641243440 has 160 divisors (see below), whose sum is σ = 395275700736. Its totient is φ = 31430277120.

The previous prime is 122641243427. The next prime is 122641243477. The reversal of 122641243440 is 44342146221.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 566269 + ... + 752291.

Almost surely, 2^122641243440 is an apocalyptic number.

122641243440 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 122641243440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197637850368).

122641243440 is an abundant number, since it is smaller than the sum of its proper divisors (272634457296).

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

122641243440 is a wasteful number, since it uses less digits than its factorization.

122641243440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186147 (or 186141 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 122641243440 its reverse (44342146221), we get a palindrome (166983389661).

The spelling of 122641243440 in words is "one hundred twenty-two billion, six hundred forty-one million, two hundred forty-three thousand, four hundred forty".