428022041 has 2 divisors, whose sum is σ = 428022042. Its totient is φ = 428022040.

The previous prime is 428022037. The next prime is 428022059. The reversal of 428022041 is 140220824.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419635225 + 8386816 = 20485^2 + 2896^2 .

It is a cyclic number.

It is not a de Polignac number, because 428022041 - 2² = 428022037 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 428021998 and 428022016.

It is not a weakly prime, because it can be changed into another prime (428022061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214011020 + 214011021.

It is an arithmetic number, because the mean of its divisors is an integer number (214011021).

Almost surely, 2^428022041 is an apocalyptic number.

It is an amenable number.

428022041 is a deficient number, since it is larger than the sum of its proper divisors (1).

428022041 is an equidigital number, since it uses as much as digits as its factorization.

428022041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 428022041 is about 20688.6935546931. The cubic root of 428022041 is about 753.6251405398.

Adding to 428022041 its reverse (140220824), we get a palindrome (568242865).

The spelling of 428022041 in words is "four hundred twenty-eight million, twenty-two thousand, forty-one".