130520405 has 16 divisors (see below), whose sum is σ = 166864320. Its totient is φ = 97723008.

The previous prime is 130520389. The next prime is 130520413. The reversal of 130520405 is 504025031.

It is a cyclic number.

It is not a de Polignac number, because 130520405 - 2⁴ = 130520389 is a prime.

It is a super-2 number, since 2×130520405² = 34071152242728050, which contains 22 as substring.

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, 392 + ... + 16161.

It is an arithmetic number, because the mean of its divisors is an integer number (10429020).

Almost surely, 2^130520405 is an apocalyptic number.

It is an amenable number.

130520405 is a deficient number, since it is larger than the sum of its proper divisors (36343915).

130520405 is a wasteful number, since it uses less digits than its factorization.

130520405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16660.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 130520405 is about 11424.5527264747. The cubic root of 130520405 is about 507.2547675873.

Adding to 130520405 its reverse (504025031), we get a palindrome (634545436).

The spelling of 130520405 in words is "one hundred thirty million, five hundred twenty thousand, four hundred five".