130724 has 12 divisors (see below), whose sum is σ = 249648. Its totient is φ = 59400.

The previous prime is 130699. The next prime is 130729. The reversal of 130724 is 427031.

130724 = T₇₂ + T₇₃ + ... + T₁₀₄.

It is a happy number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (130729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1442 + ... + 1529.

It is an arithmetic number, because the mean of its divisors is an integer number (20804).

2¹³⁰⁷²⁴ is an apocalyptic number.

It is an amenable number.

130724 is a deficient number, since it is larger than the sum of its proper divisors (118924).

130724 is a wasteful number, since it uses less digits than its factorization.

130724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986 (or 2984 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 130724 is about 361.5577408935. The cubic root of 130724 is about 50.7518381241.

Adding to 130724 its reverse (427031), we get a palindrome (557755).

It can be divided in two parts, 1307 and 24, that added together give a palindrome (1331).

The spelling of 130724 in words is "one hundred thirty thousand, seven hundred twenty-four".