20126089 has 4 divisors (see below), whose sum is σ = 20368656. Its totient is φ = 19883524.

The previous prime is 20126077. The next prime is 20126101. The reversal of 20126089 is 98062102.

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 (20126077) and next prime (20126101).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20126089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20126009) 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, 121159 + ... + 121324.

It is an arithmetic number, because the mean of its divisors is an integer number (5092164).

Almost surely, 2^20126089 is an apocalyptic number.

It is an amenable number.

20126089 is a deficient number, since it is larger than the sum of its proper divisors (242567).

20126089 is an equidigital number, since it uses as much as digits as its factorization.

20126089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242566.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 20126089 is about 4486.2109847844. The cubic root of 20126089 is about 272.0109974288.

The spelling of 20126089 in words is "twenty million, one hundred twenty-six thousand, eighty-nine".