420200422 has 4 divisors (see below), whose sum is σ = 630300636. Its totient is φ = 210100210.

The previous prime is 420200399. The next prime is 420200423. The reversal of 420200422 is 224002024.

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

It is a junction number, because it is equal to n+sod(n) for n = 420200396 and 420200405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420200423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105050104 + ... + 105050107.

It is an arithmetic number, because the mean of its divisors is an integer number (157575159).

Almost surely, 2^420200422 is an apocalyptic number.

420200422 is a deficient number, since it is larger than the sum of its proper divisors (210100214).

420200422 is a wasteful number, since it uses less digits than its factorization.

420200422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210100213.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 420200422 is about 20498.7907448220. The cubic root of 420200422 is about 749.0063415868.

Adding to 420200422 its reverse (224002024), we get a palindrome (644202446).

The spelling of 420200422 in words is "four hundred twenty million, two hundred thousand, four hundred twenty-two".