126739 has 2 divisors, whose sum is σ = 126740. Its totient is φ = 126738.

The previous prime is 126733. The next prime is 126743. The reversal of 126739 is 937621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126739 - 2⁷ = 126611 is a prime.

126739 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (126733) 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, 63369 + 63370.

It is an arithmetic number, because the mean of its divisors is an integer number (63370).

2¹²⁶⁷³⁹ is an apocalyptic number.

126739 is a deficient number, since it is larger than the sum of its proper divisors (1).

126739 is an equidigital number, since it uses as much as digits as its factorization.

126739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 28.

The square root of 126739 is about 356.0042134582. The cubic root of 126739 is about 50.2307996578.

The spelling of 126739 in words is "one hundred twenty-six thousand, seven hundred thirty-nine".