130204505 has 8 divisors (see below), whose sum is σ = 156443400. Its totient is φ = 104031616.

The previous prime is 130204499. The next prime is 130204537. The reversal of 130204505 is 505402031.

It can be written as a sum of positive squares in 4 ways, for example, as 23309584 + 106894921 = 4828^2 + 10339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 130204505 - 2¹² = 130200409 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12050 + ... + 20139.

It is an arithmetic number, because the mean of its divisors is an integer number (19555425).

Almost surely, 2^130204505 is an apocalyptic number.

It is an amenable number.

130204505 is a deficient number, since it is larger than the sum of its proper divisors (26238895).

130204505 is an equidigital number, since it uses as much as digits as its factorization.

130204505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33003.

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

The square root of 130204505 is about 11410.7188642960. The cubic root of 130204505 is about 506.8451988471.

Adding to 130204505 its reverse (505402031), we get a palindrome (635606536).

The spelling of 130204505 in words is "one hundred thirty million, two hundred four thousand, five hundred five".