20126459 has 2 divisors, whose sum is σ = 20126460. Its totient is φ = 20126458.

The previous prime is 20126437. The next prime is 20126467. The reversal of 20126459 is 95462102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20126459 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20126479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10063229 + 10063230.

It is an arithmetic number, because the mean of its divisors is an integer number (10063230).

Almost surely, 2^20126459 is an apocalyptic number.

20126459 is a deficient number, since it is larger than the sum of its proper divisors (1).

20126459 is an equidigital number, since it uses as much as digits as its factorization.

20126459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 20126459 is about 4486.2522220669. The cubic root of 20126459 is about 272.0126643109.

The spelling of 20126459 in words is "twenty million, one hundred twenty-six thousand, four hundred fifty-nine".