20023429 has 2 divisors, whose sum is σ = 20023430. Its totient is φ = 20023428.

The previous prime is 20023417. The next prime is 20023441. The reversal of 20023429 is 92432002.

It is a balanced prime because it is at equal distance from previous prime (20023417) and next prime (20023441).

It can be written as a sum of positive squares in only one way, i.e., 12974404 + 7049025 = 3602^2 + 2655^2 .

It is a cyclic number.

It is not a de Polignac number, because 20023429 - 2¹⁹ = 19499141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20023459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011714 + 10011715.

It is an arithmetic number, because the mean of its divisors is an integer number (10011715).

Almost surely, 2^20023429 is an apocalyptic number.

It is an amenable number.

20023429 is a deficient number, since it is larger than the sum of its proper divisors (1).

20023429 is an equidigital number, since it uses as much as digits as its factorization.

20023429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20023429 is about 4474.7546301445. The cubic root of 20023429 is about 271.5477137816.

The spelling of 20023429 in words is "twenty million, twenty-three thousand, four hundred twenty-nine".