4121535440 has 40 divisors (see below), whose sum is σ = 10453714848. Its totient is φ = 1498739840.

The previous prime is 4121535433. The next prime is 4121535449. The reversal of 4121535440 is 445351214.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4121535449) by changing a digit.

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, 2340902 + ... + 2342661.

Almost surely, 2^4121535440 is an apocalyptic number.

4121535440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4121535440 is an abundant number, since it is smaller than the sum of its proper divisors (6332179408).

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

4121535440 is a wasteful number, since it uses less digits than its factorization.

4121535440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4683587 (or 4683581 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 4121535440 is about 64199.1856646173. The cubic root of 4121535440 is about 1603.3180414524.

Adding to 4121535440 its reverse (445351214), we get a palindrome (4566886654).

The spelling of 4121535440 in words is "four billion, one hundred twenty-one million, five hundred thirty-five thousand, four hundred forty".