20234429 has 2 divisors, whose sum is σ = 20234430. Its totient is φ = 20234428.

The previous prime is 20234387. The next prime is 20234479. The reversal of 20234429 is 92443202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15194404 + 5040025 = 3898^2 + 2245^2 .

It is a cyclic number.

It is not a de Polignac number, because 20234429 - 2¹⁶ = 20168893 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_1284524 and since 20234429 and 1284524 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 20234398 and 20234407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20234479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10117214 + 10117215.

It is an arithmetic number, because the mean of its divisors is an integer number (10117215).

Almost surely, 2^20234429 is an apocalyptic number.

It is an amenable number.

20234429 is a deficient number, since it is larger than the sum of its proper divisors (1).

20234429 is an equidigital number, since it uses as much as digits as its factorization.

20234429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 20234429 is about 4498.2695561738. The cubic root of 20234429 is about 272.4982083321.

The spelling of 20234429 in words is "twenty million, two hundred thirty-four thousand, four hundred twenty-nine".