126529 has 4 divisors (see below), whose sum is σ = 136276. Its totient is φ = 116784.

The previous prime is 126517. The next prime is 126541. The reversal of 126529 is 925621.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (126517) and next prime (126541).

It can be written as a sum of positive squares in 2 ways, for example, as 65025 + 61504 = 255^2 + 248^2 .

It is a cyclic number.

It is not a de Polignac number, because 126529 - 2¹⁵ = 93761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4854 + ... + 4879.

It is an arithmetic number, because the mean of its divisors is an integer number (34069).

2¹²⁶⁵²⁹ is an apocalyptic number.

It is an amenable number.

126529 is a deficient number, since it is larger than the sum of its proper divisors (9747).

126529 is an equidigital number, since it uses as much as digits as its factorization.

126529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9746.

The product of its digits is 1080, while the sum is 25.

The square root of 126529 is about 355.7091508522. The cubic root of 126529 is about 50.2030410373.

The spelling of 126529 in words is "one hundred twenty-six thousand, five hundred twenty-nine".