2130403440 has 120 divisors (see below), whose sum is σ = 7259316624. Its totient is φ = 516454400.

The previous prime is 2130403409. The next prime is 2130403459. The reversal of 2130403440 is 443040312.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7641 + ... + 65720.

Almost surely, 2^2130403440 is an apocalyptic number.

2130403440 is a gapful number since it is divisible by the number (20) 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 2130403440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3629658312).

2130403440 is an abundant number, since it is smaller than the sum of its proper divisors (5128913184).

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

2130403440 is a wasteful number, since it uses less digits than its factorization.

2130403440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73399 (or 73382 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2130403440 is about 46156.2936120309. The cubic root of 2130403440 is about 1286.7295801191.

Adding to 2130403440 its reverse (443040312), we get a palindrome (2573443752).

The spelling of 2130403440 in words is "two billion, one hundred thirty million, four hundred three thousand, four hundred forty".