115242442240 has 80 divisors (see below), whose sum is σ = 276558491088. Its totient is φ = 46055817216.

The previous prime is 115242442199. The next prime is 115242442291. The reversal of 115242442240 is 42244242511.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2932159 + ... + 2971201.

Almost surely, 2^115242442240 is an apocalyptic number.

115242442240 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 115242442240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138279245544).

115242442240 is an abundant number, since it is smaller than the sum of its proper divisors (161316048848).

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

115242442240 is an equidigital number, since it uses as much as digits as its factorization.

115242442240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40219 (or 40203 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 115242442240 its reverse (42244242511), we get a palindrome (157486684751).

The spelling of 115242442240 in words is "one hundred fifteen billion, two hundred forty-two million, four hundred forty-two thousand, two hundred forty".