126667 has 4 divisors (see below), whose sum is σ = 134136. Its totient is φ = 119200.

The previous prime is 126653. The next prime is 126683. The reversal of 126667 is 766621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766621 = 241 ⋅3181.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126667 is a prime.

It is a Duffinian number.

126667 is a lucky number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (126067) 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, 3709 + ... + 3742.

It is an arithmetic number, because the mean of its divisors is an integer number (33534).

2¹²⁶⁶⁶⁷ is an apocalyptic number.

126667 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

126667 is a deficient number, since it is larger than the sum of its proper divisors (7469).

126667 is an equidigital number, since it uses as much as digits as its factorization.

126667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7468.

The product of its digits is 3024, while the sum is 28.

The square root of 126667 is about 355.9030766936. The cubic root of 126667 is about 50.2212858731.

The spelling of 126667 in words is "one hundred twenty-six thousand, six hundred sixty-seven".