2130423440 has 20 divisors (see below), whose sum is σ = 4953234684. Its totient is φ = 852169344.

The previous prime is 2130423439. The next prime is 2130423467. The reversal of 2130423440 is 443240312.

It can be written as a sum of positive squares in 2 ways, for example, as 700978576 + 1429444864 = 26476^2 + 37808^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13315067 + ... + 13315226.

Almost surely, 2^2130423440 is an apocalyptic number.

2130423440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130423440 is an abundant number, since it is smaller than the sum of its proper divisors (2822811244).

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

2130423440 is a wasteful number, since it uses less digits than its factorization.

2130423440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26630306 (or 26630300 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 2130423440 is about 46156.5102667002. The cubic root of 2130423440 is about 1286.7336066664.

Adding to 2130423440 its reverse (443240312), we get a palindrome (2573663752).

It can be divided in two parts, 21304 and 23440, that added together give a palindrome (44744).

The spelling of 2130423440 in words is "two billion, one hundred thirty million, four hundred twenty-three thousand, four hundred forty".