130243520 has 112 divisors (see below), whose sum is σ = 341912448. Its totient is φ = 46863360.

The previous prime is 130243513. The next prime is 130243523. The reversal of 130243520 is 25342031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 130243492 and 130243501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130243523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 573647 + ... + 573873.

Almost surely, 2^130243520 is an apocalyptic number.

130243520 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 130243520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170956224).

130243520 is an abundant number, since it is smaller than the sum of its proper divisors (211668928).

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

130243520 is a wasteful number, since it uses less digits than its factorization.

130243520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 130243520 is about 11412.4283130279. The cubic root of 130243520 is about 506.8958181675.

Adding to 130243520 its reverse (25342031), we get a palindrome (155585551).

The spelling of 130243520 in words is "one hundred thirty million, two hundred forty-three thousand, five hundred twenty".