126851 has 2 divisors, whose sum is σ = 126852. Its totient is φ = 126850.

The previous prime is 126839. The next prime is 126857. The reversal of 126851 is 158621.

It is a strong prime.

It is an emirp because it is prime and its reverse (158621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126851 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (126857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63425 + 63426.

It is an arithmetic number, because the mean of its divisors is an integer number (63426).

2¹²⁶⁸⁵¹ is an apocalyptic number.

126851 is a deficient number, since it is larger than the sum of its proper divisors (1).

126851 is an equidigital number, since it uses as much as digits as its factorization.

126851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 23.

The square root of 126851 is about 356.1614802305. The cubic root of 126851 is about 50.2455917191.

The spelling of 126851 in words is "one hundred twenty-six thousand, eight hundred fifty-one".