422043451 has 2 divisors, whose sum is σ = 422043452. Its totient is φ = 422043450.

The previous prime is 422043431. The next prime is 422043473. The reversal of 422043451 is 154340224.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422043451 - 2¹³ = 422035259 is a prime.

It is not a weakly prime, because it can be changed into another prime (422043421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211021725 + 211021726.

It is an arithmetic number, because the mean of its divisors is an integer number (211021726).

Almost surely, 2^422043451 is an apocalyptic number.

422043451 is a deficient number, since it is larger than the sum of its proper divisors (1).

422043451 is an equidigital number, since it uses as much as digits as its factorization.

422043451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 422043451 is about 20543.6961377450. The cubic root of 422043451 is about 750.0998095316.

Adding to 422043451 its reverse (154340224), we get a palindrome (576383675).

The spelling of 422043451 in words is "four hundred twenty-two million, forty-three thousand, four hundred fifty-one".