2141531440 has 40 divisors (see below), whose sum is σ = 5001429888. Its totient is φ = 852764160.

The previous prime is 2141531417. The next prime is 2141531443. The reversal of 2141531440 is 441351412.

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

It is not an unprimeable number, because it can be changed into a prime (2141531443) 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, 42181 + ... + 77860.

Almost surely, 2^2141531440 is an apocalyptic number.

2141531440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2141531440 is an abundant number, since it is smaller than the sum of its proper divisors (2859898448).

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

2141531440 is a wasteful number, since it uses less digits than its factorization.

2141531440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120277 (or 120271 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2141531440 is about 46276.6835458204. The cubic root of 2141531440 is about 1288.9660685496.

Adding to 2141531440 its reverse (441351412), we get a palindrome (2582882852).

The spelling of 2141531440 in words is "two billion, one hundred forty-one million, five hundred thirty-one thousand, four hundred forty".