20424404029 has 2 divisors, whose sum is σ = 20424404030. Its totient is φ = 20424404028.

The previous prime is 20424403969. The next prime is 20424404051. The reversal of 20424404029 is 92040442402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20074639225 + 349764804 = 141685^2 + 18702^2 .

It is a cyclic number.

It is not a de Polignac number, because 20424404029 - 2²⁹ = 19887533117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20424404089) 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 as a sum of consecutive naturals, namely, 10212202014 + 10212202015.

It is an arithmetic number, because the mean of its divisors is an integer number (10212202015).

Almost surely, 2^20424404029 is an apocalyptic number.

It is an amenable number.

20424404029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20424404029 is an equidigital number, since it uses as much as digits as its factorization.

20424404029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 31.

The spelling of 20424404029 in words is "twenty billion, four hundred twenty-four million, four hundred four thousand, twenty-nine".