126699 has 8 divisors (see below), whose sum is σ = 170640. Its totient is φ = 83616.

The previous prime is 126691. The next prime is 126703. The reversal of 126699 is 996621.

It is a happy number.

126699 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 126699 - 2³ = 126691 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

126699 is strictly pandigital in base 7.

It is a plaindrome in base 10.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (126691) 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 7 ways as a sum of consecutive naturals, for example, 337 + ... + 605.

It is an arithmetic number, because the mean of its divisors is an integer number (21330).

2¹²⁶⁶⁹⁹ is an apocalyptic number.

126699 is a deficient number, since it is larger than the sum of its proper divisors (43941).

126699 is a wasteful number, since it uses less digits than its factorization.

126699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429.

The product of its digits is 5832, while the sum is 33.

The square root of 126699 is about 355.9480299145. The cubic root of 126699 is about 50.2255146668.

The spelling of 126699 in words is "one hundred twenty-six thousand, six hundred ninety-nine".