126785 has 4 divisors (see below), whose sum is σ = 152148. Its totient is φ = 101424.

The previous prime is 126781. The next prime is 126823. The reversal of 126785 is 587621.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43264 + 83521 = 208^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 126785 - 2² = 126781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126781) 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, 12674 + ... + 12683.

It is an arithmetic number, because the mean of its divisors is an integer number (38037).

2¹²⁶⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

126785 is a deficient number, since it is larger than the sum of its proper divisors (25363).

126785 is an equidigital number, since it uses as much as digits as its factorization.

126785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25362.

The product of its digits is 3360, while the sum is 29.

The square root of 126785 is about 356.0688135740. The cubic root of 126785 is about 50.2368760228.

Subtracting from 126785 its sum of digits (29), we obtain a triangular number (126756 = T₅₀₃).

The spelling of 126785 in words is "one hundred twenty-six thousand, seven hundred eighty-five".