126679 has 4 divisors (see below), whose sum is σ = 144784. Its totient is φ = 108576.

The previous prime is 126653. The next prime is 126683. The reversal of 126679 is 976621.

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

It is a cyclic number.

It is not a de Polignac number, because 126679 - 2⁷ = 126551 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 126679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9042 + ... + 9055.

It is an arithmetic number, because the mean of its divisors is an integer number (36196).

2¹²⁶⁶⁷⁹ is an apocalyptic number.

126679 is a deficient number, since it is larger than the sum of its proper divisors (18105).

126679 is an equidigital number, since it uses as much as digits as its factorization.

126679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18104.

The product of its digits is 4536, while the sum is 31.

The square root of 126679 is about 355.9199348168. The cubic root of 126679 is about 50.2228717542. Note that the first 3 decimals are identical.

It can be divided in two parts, 12667 and 9, that multiplied together give a triangular number (114003 = T₄₇₇).

The spelling of 126679 in words is "one hundred twenty-six thousand, six hundred seventy-nine".