126009069 has 4 divisors (see below), whose sum is σ = 168012096. Its totient is φ = 84006044.

The previous prime is 126009061. The next prime is 126009077. The reversal of 126009069 is 960900621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (126009061) and next prime (126009077).

It is a cyclic number.

It is not a de Polignac number, because 126009069 - 2³ = 126009061 is a prime.

It is a super-2 number, since 2×126009069² = 31756570940493522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126009061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21001509 + ... + 21001514.

It is an arithmetic number, because the mean of its divisors is an integer number (42003024).

Almost surely, 2^126009069 is an apocalyptic number.

It is an amenable number.

126009069 is a deficient number, since it is larger than the sum of its proper divisors (42003027).

126009069 is an equidigital number, since it uses as much as digits as its factorization.

126009069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42003026.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 126009069 is about 11225.3761184203. The cubic root of 126009069 is about 501.3418211441.

The spelling of 126009069 in words is "one hundred twenty-six million, nine thousand, sixty-nine".