420207422 has 4 divisors (see below), whose sum is σ = 630311136. Its totient is φ = 210103710.

The previous prime is 420207421. The next prime is 420207433. The reversal of 420207422 is 224702024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420207421) 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, 105051854 + ... + 105051857.

It is an arithmetic number, because the mean of its divisors is an integer number (157577784).

Almost surely, 2^420207422 is an apocalyptic number.

420207422 is a deficient number, since it is larger than the sum of its proper divisors (210103714).

420207422 is a wasteful number, since it uses less digits than its factorization.

420207422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210103713.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 420207422 is about 20498.9614858900. The cubic root of 420207422 is about 749.0105007253.

Adding to 420207422 its reverse (224702024), we get a palindrome (644909446).

The spelling of 420207422 in words is "four hundred twenty million, two hundred seven thousand, four hundred twenty-two".