72130 has 8 divisors (see below), whose sum is σ = 129852. Its totient is φ = 28848.

The previous prime is 72109. The next prime is 72139. The reversal of 72130 is 3127.

It can be written as a sum of positive squares in 2 ways, for example, as 71289 + 841 = 267^2 + 29^2 .

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

It is a plaindrome in base 12.

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 72130.

It is not an unprimeable number, because it can be changed into a prime (72139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3597 + ... + 3616.

2⁷²¹³⁰ is an apocalyptic number.

72130 is a deficient number, since it is larger than the sum of its proper divisors (57722).

72130 is a wasteful number, since it uses less digits than its factorization.

72130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7220.

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 72130 is about 268.5702887514. The cubic root of 72130 is about 41.6266994530.

Adding to 72130 its reverse (3127), we get a palindrome (75257).

It can be divided in two parts, 72 and 130, that added together give a palindrome (202).

The spelling of 72130 in words is "seventy-two thousand, one hundred thirty".