126678 has 16 divisors (see below), whose sum is σ = 259776. Its totient is φ = 41160.

The previous prime is 126653. The next prime is 126683. The reversal of 126678 is 876621.

It is a happy number.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

126678 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13 + ... + 503.

It is an arithmetic number, because the mean of its divisors is an integer number (16236).

2¹²⁶⁶⁷⁸ is an apocalyptic number.

126678 is an abundant number, since it is smaller than the sum of its proper divisors (133098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126678 is a wasteful number, since it uses less digits than its factorization.

126678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539.

The product of its digits is 4032, while the sum is 30.

The square root of 126678 is about 355.9185300037. The cubic root of 126678 is about 50.2227396013. Note that the first 3 decimals are identical.

The spelling of 126678 in words is "one hundred twenty-six thousand, six hundred seventy-eight".