2001422429 has 2 divisors, whose sum is σ = 2001422430. Its totient is φ = 2001422428.

The previous prime is 2001422417. The next prime is 2001422431. The reversal of 2001422429 is 9242241002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1149074404 + 852348025 = 33898^2 + 29195^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001422429 - 2⁸ = 2001422173 is a prime.

Together with 2001422431, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001422398 and 2001422407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001422329) 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, 1000711214 + 1000711215.

It is an arithmetic number, because the mean of its divisors is an integer number (1000711215).

Almost surely, 2^2001422429 is an apocalyptic number.

It is an amenable number.

2001422429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001422429 is an equidigital number, since it uses as much as digits as its factorization.

2001422429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 2001422429 is about 44737.2599630331. The cubic root of 2001422429 is about 1260.2196704848.

The spelling of 2001422429 in words is "two billion, one million, four hundred twenty-two thousand, four hundred twenty-nine".