130135640 has 64 divisors (see below), whose sum is σ = 304335360. Its totient is φ = 50042880.

The previous prime is 130135637. The next prime is 130135661. The reversal of 130135640 is 46531031.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119177 + ... + 120263.

It is an arithmetic number, because the mean of its divisors is an integer number (4755240).

Almost surely, 2^130135640 is an apocalyptic number.

130135640 is a gapful number since it is divisible by the number (10) 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 130135640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152167680).

130135640 is an abundant number, since it is smaller than the sum of its proper divisors (174199720).

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

130135640 is a wasteful number, since it uses less digits than its factorization.

130135640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 130135640 is about 11407.7009077202. The cubic root of 130135640 is about 506.7558264915.

Adding to 130135640 its reverse (46531031), we get a palindrome (176666671).

The spelling of 130135640 in words is "one hundred thirty million, one hundred thirty-five thousand, six hundred forty".