75012421040 has 120 divisors (see below), whose sum is σ = 185419471680. Its totient is φ = 28216783872.

The previous prime is 75012421039. The next prime is 75012421079. The reversal of 75012421040 is 4012421057.

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 23 ways as a sum of consecutive naturals, for example, 3947081 + ... + 3966039.

It is an arithmetic number, because the mean of its divisors is an integer number (1545162264).

Almost surely, 2^75012421040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75012421040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92709735840).

75012421040 is an abundant number, since it is smaller than the sum of its proper divisors (110407050640).

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

75012421040 is a wasteful number, since it uses less digits than its factorization.

75012421040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19147 (or 19122 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

Adding to 75012421040 its reverse (4012421057), we get a palindrome (79024842097).

The spelling of 75012421040 in words is "seventy-five billion, twelve million, four hundred twenty-one thousand, forty".