126530 has 8 divisors (see below), whose sum is σ = 227772. Its totient is φ = 50608.

The previous prime is 126517. The next prime is 126541. The reversal of 126530 is 35621.

126530 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in 2 ways, for example, as 104329 + 22201 = 323^2 + 149^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 126499 and 126508.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 126530.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6317 + ... + 6336.

2¹²⁶⁵³⁰ is an apocalyptic number.

126530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126530 is a deficient number, since it is larger than the sum of its proper divisors (101242).

126530 is a wasteful number, since it uses less digits than its factorization.

126530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12660.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 126530 is about 355.7105564922. The cubic root of 126530 is about 50.2031732940.

Subtracting from 126530 its reverse (35621), we obtain a palindrome (90909).

It can be divided in two parts, 1265 and 30, that multiplied together give a triangular number (37950 = T₂₇₅).

The spelling of 126530 in words is "one hundred twenty-six thousand, five hundred thirty".