126986 has 4 divisors (see below), whose sum is σ = 190482. Its totient is φ = 63492.

The previous prime is 126967. The next prime is 126989. The reversal of 126986 is 689621.

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

It can be written as a sum of positive squares in only one way, i.e., 126025 + 961 = 355^2 + 31^2 .

It is a super-2 number, since 2×126986² = 32250888392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31745 + ... + 31748.

2¹²⁶⁹⁸⁶ is an apocalyptic number.

126986 is a deficient number, since it is larger than the sum of its proper divisors (63496).

126986 is an equidigital number, since it uses as much as digits as its factorization.

126986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63495.

The product of its digits is 5184, while the sum is 32.

The square root of 126986 is about 356.3509506091. The cubic root of 126986 is about 50.2634098679.

The spelling of 126986 in words is "one hundred twenty-six thousand, nine hundred eighty-six".