126039 has 4 divisors (see below), whose sum is σ = 168056. Its totient is φ = 84024.

The previous prime is 126037. The next prime is 126041. The reversal of 126039 is 930621.

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

It is an interprime number because it is at equal distance from previous prime (126037) and next prime (126041).

It is not a de Polignac number, because 126039 - 2¹ = 126037 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 126039.

It is not an unprimeable number, because it can be changed into a prime (126031) 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 in 3 ways as a sum of consecutive naturals, for example, 21004 + ... + 21009.

It is an arithmetic number, because the mean of its divisors is an integer number (42014).

2¹²⁶⁰³⁹ is an apocalyptic number.

126039 is a deficient number, since it is larger than the sum of its proper divisors (42017).

126039 is an equidigital number, since it uses as much as digits as its factorization.

126039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42016.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 126039 is about 355.0197177623. The cubic root of 126039 is about 50.1381512663.

The spelling of 126039 in words is "one hundred twenty-six thousand, thirty-nine".